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42253131 = 319741283
BaseRepresentation
bin1010000100101…
…1101101001011
32221111200101210
42201023231023
541304100011
64105344203
71022100654
oct241135513
987450353
1042253131
112193a448
1212198063
1389a526b
14587c52b
153a996a6
hex284bb4b

42253131 has 8 divisors (see below), whose sum is σ = 59302720. Its totient is φ = 26686152.

The previous prime is 42253097. The next prime is 42253153. The reversal of 42253131 is 13135224.

Adding to 42253131 its reverse (13135224), we get a palindrome (55388355).

42253131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42253131 - 221 = 40155979 is a prime.

It is a super-2 number, since 2×422531312 = 3570654158606322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42253098 and 42253107.

It is not an unprimeable number, because it can be changed into a prime (42253831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370585 + ... + 370698.

It is an arithmetic number, because the mean of its divisors is an integer number (7412840).

Almost surely, 242253131 is an apocalyptic number.

42253131 is a deficient number, since it is larger than the sum of its proper divisors (17049589).

42253131 is a wasteful number, since it uses less digits than its factorization.

42253131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741305.

The product of its digits is 720, while the sum is 21.

The square root of 42253131 is about 6500.2408416919. The cubic root of 42253131 is about 348.2995917247.

The spelling of 42253131 in words is "forty-two million, two hundred fifty-three thousand, one hundred thirty-one".

Divisors: 1 3 19 57 741283 2223849 14084377 42253131