42090524 has 12 divisors (see below), whose sum is σ = 84181104. Its totient is φ = 18038784.

The previous prime is 42090523. The next prime is 42090527. The reversal of 42090524 is 42509024.

42090524 is an admirable number.

It is a super-2 number, since 2×42090524² = 3543224421189152, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42090493 and 42090502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42090523) 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, 751589 + ... + 751644.

It is an arithmetic number, because the mean of its divisors is an integer number (7015092).

Almost surely, 2^42090524 is an apocalyptic number.

It is an amenable number.

42090524 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42090524 is a wasteful number, since it uses less digits than its factorization.

42090524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503244 (or 1503242 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42090524 is about 6487.7210174298. The cubic root of 42090524 is about 347.8522184869.

Adding to 42090524 its reverse (42509024), we get a palindrome (84599548).

The spelling of 42090524 in words is "forty-two million, ninety thousand, five hundred twenty-four".