42102524 has 6 divisors (see below), whose sum is σ = 73679424. Its totient is φ = 21051260.

The previous prime is 42102521. The next prime is 42102527. The reversal of 42102524 is 42520124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42102521) and next prime (42102527).

It is a junction number, because it is equal to n+sod(n) for n = 42102496 and 42102505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42102521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5262812 + ... + 5262819.

It is an arithmetic number, because the mean of its divisors is an integer number (12279904).

Almost surely, 2^42102524 is an apocalyptic number.

It is an amenable number.

42102524 is a deficient number, since it is larger than the sum of its proper divisors (31576900).

42102524 is a wasteful number, since it uses less digits than its factorization.

42102524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525635 (or 10525633 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42102524 is about 6488.6457755066. The cubic root of 42102524 is about 347.8852728786.

Adding to 42102524 its reverse (42520124), we get a palindrome (84622648).

The spelling of 42102524 in words is "forty-two million, one hundred two thousand, five hundred twenty-four".