42878537132431 has 32 divisors (see below), whose sum is σ = 60957722907648. Its totient is φ = 29027487075840.

The previous prime is 42878537132423. The next prime is 42878537132449. The reversal of 42878537132431 is 13423173587824.

It is a happy number.

It is not a de Polignac number, because 42878537132431 - 2³ = 42878537132423 is a prime.

It is a super-2 number, since 2×42878537132431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42878537132461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259856555 + ... + 1259890588.

It is an arithmetic number, because the mean of its divisors is an integer number (1904928840864).

Almost surely, 2^{42878537132431} is an apocalyptic number.

42878537132431 is a deficient number, since it is larger than the sum of its proper divisors (18079185775217).

42878537132431 is a wasteful number, since it uses less digits than its factorization.

42878537132431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519747191.

The product of its digits is 27095040, while the sum is 58.

The spelling of 42878537132431 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred thirty-seven million, one hundred thirty-two thousand, four hundred thirty-one".