42102404 has 24 divisors (see below), whose sum is σ = 82121760. Its totient is φ = 18769536.

The previous prime is 42102373. The next prime is 42102409. The reversal of 42102404 is 40420124.

It is a super-2 number, since 2×42102404² = 3545224845158432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (42102409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15002 + ... + 17585.

It is an arithmetic number, because the mean of its divisors is an integer number (3421740).

Almost surely, 2^42102404 is an apocalyptic number.

It is an amenable number.

42102404 is a deficient number, since it is larger than the sum of its proper divisors (40019356).

42102404 is a wasteful number, since it uses less digits than its factorization.

42102404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32627 (or 32625 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42102404 is about 6488.6365285782. The cubic root of 42102404 is about 347.8849423657.

Adding to 42102404 its reverse (40420124), we get a palindrome (82522528).

The spelling of 42102404 in words is "forty-two million, one hundred two thousand, four hundred four".