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42502280 = 2351062557
BaseRepresentation
bin1010001000100…
…0100010001000
32221222100011112
42202020202020
541340033110
64114545452
71024156232
oct242104210
987870145
1042502280
1121a9a657
1212298288
138a617a2
145905252
153ae8405
hex2888888

42502280 has 16 divisors (see below), whose sum is σ = 95630220. Its totient is φ = 17000896.

The previous prime is 42502253. The next prime is 42502283. The reversal of 42502280 is 8220524.

It can be written as a sum of positive squares in 2 ways, for example, as 42484324 + 17956 = 6518^2 + 134^2 .

It is a super-3 number, since 3×425022803 (a number of 24 digits) contains 333 as substring.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (42502283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531239 + ... + 531318.

Almost surely, 242502280 is an apocalyptic number.

42502280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42502280 is an abundant number, since it is smaller than the sum of its proper divisors (53127940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42502280 is a wasteful number, since it uses less digits than its factorization.

42502280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062568 (or 1062564 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 42502280 is about 6519.3772708749. The cubic root of 42502280 is about 348.9828427566.

It can be divided in two parts, 42 and 502280, that multiplied together give a triangular number (21095760 = T6495).

The spelling of 42502280 in words is "forty-two million, five hundred two thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1062557 2125114 4250228 5312785 8500456 10625570 21251140 42502280