42155404432 has 20 divisors (see below), whose sum is σ = 81836575740. Its totient is φ = 21036288128.

The previous prime is 42155404429. The next prime is 42155404463. The reversal of 42155404432 is 23440455124.

It can be written as a sum of positive squares in 2 ways, for example, as 29057975296 + 13097429136 = 170464^2 + 114444^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579983 + ... + 2596270.

It is an arithmetic number, because the mean of its divisors is an integer number (4091828787).

Almost surely, 2^42155404432 is an apocalyptic number.

It is an amenable number.

42155404432 is a deficient number, since it is larger than the sum of its proper divisors (39681171308).

42155404432 is a wasteful number, since it uses less digits than its factorization.

42155404432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176770 (or 5176764 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 42155404432 its reverse (23440455124), we get a palindrome (65595859556).

The spelling of 42155404432 in words is "forty-two billion, one hundred fifty-five million, four hundred four thousand, four hundred thirty-two".