Search a number
-
+
42151669 = 76021667
BaseRepresentation
bin1010000011001…
…0111011110101
32221022112012221
42200302323311
541242323134
64103242341
71021166110
oct240627365
987275187
1042151669
112188019a
12121493b1
13896b021
145853577
153a795b4
hex2832ef5

42151669 has 4 divisors (see below), whose sum is σ = 48173344. Its totient is φ = 36129996.

The previous prime is 42151667. The next prime is 42151673. The reversal of 42151669 is 96615124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42151669 - 21 = 42151667 is a prime.

It is a super-2 number, since 2×421516692 = 3553526398971122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42151667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010827 + ... + 3010840.

It is an arithmetic number, because the mean of its divisors is an integer number (12043336).

Almost surely, 242151669 is an apocalyptic number.

It is an amenable number.

42151669 is a deficient number, since it is larger than the sum of its proper divisors (6021675).

42151669 is an equidigital number, since it uses as much as digits as its factorization.

42151669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021674.

The product of its digits is 12960, while the sum is 34.

The square root of 42151669 is about 6492.4316707995. The cubic root of 42151669 is about 348.0205788905.

The spelling of 42151669 in words is "forty-two million, one hundred fifty-one thousand, six hundred sixty-nine".

Divisors: 1 7 6021667 42151669