42431287788 has 36 divisors (see below), whose sum is σ = 107311244040. Its totient is φ = 14136591936.

The previous prime is 42431287763. The next prime is 42431287841. The reversal of 42431287788 is 88778213424.

42431287788 is a `hidden beast` number, since 42 + 431 + 28 + 77 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226545 + ... + 369032.

It is an arithmetic number, because the mean of its divisors is an integer number (2980867890).

Almost surely, 2^42431287788 is an apocalyptic number.

It is an amenable number.

42431287788 is an abundant number, since it is smaller than the sum of its proper divisors (64879956252).

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

42431287788 is a wasteful number, since it uses less digits than its factorization.

42431287788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597566 (or 597561 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 42431287788 in words is "forty-two billion, four hundred thirty-one million, two hundred eighty-seven thousand, seven hundred eighty-eight".