42878059920 has 60 divisors (see below), whose sum is σ = 143998820316. Its totient is φ = 11434149120.

The previous prime is 42878059907. The next prime is 42878059921. The reversal of 42878059920 is 2995087824.

42878059920 is a `hidden beast` number, since 4 + 28 + 7 + 8 + 0 + 599 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21177234576 + 21700825344 = 145524^2 + 147312^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×42878059920² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42878059921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29775711 + ... + 29777150.

Almost surely, 2^42878059920 is an apocalyptic number.

42878059920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42878059920 is an abundant number, since it is smaller than the sum of its proper divisors (101120760396).

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

42878059920 is a wasteful number, since it uses less digits than its factorization.

42878059920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59552880 (or 59552871 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 42878059920 in words is "forty-two billion, eight hundred seventy-eight million, fifty-nine thousand, nine hundred twenty".