42556432404 has 12 divisors (see below), whose sum is σ = 99298342304. Its totient is φ = 14185477464.

The previous prime is 42556432397. The next prime is 42556432409. The reversal of 42556432404 is 40423465524.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×42556432404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556432409) 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, 1773184672 + ... + 1773184695.

Almost surely, 2^42556432404 is an apocalyptic number.

It is an amenable number.

42556432404 is an abundant number, since it is smaller than the sum of its proper divisors (56741909900).

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

42556432404 is a wasteful number, since it uses less digits than its factorization.

42556432404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546369374 (or 3546369372 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 42556432404 its reverse (40423465524), we get a palindrome (82979897928).

The spelling of 42556432404 in words is "forty-two billion, five hundred fifty-six million, four hundred thirty-two thousand, four hundred four".