42400357439 has 32 divisors (see below), whose sum is σ = 48558968640. Its totient is φ = 36668620800.

The previous prime is 42400357429. The next prime is 42400357451. The reversal of 42400357439 is 93475300424.

It is not a de Polignac number, because 42400357439 - 2⁸ = 42400357183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42400357396 and 42400357405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400357429) 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, 7206779 + ... + 7212659.

It is an arithmetic number, because the mean of its divisors is an integer number (1517467770).

Almost surely, 2^42400357439 is an apocalyptic number.

42400357439 is a deficient number, since it is larger than the sum of its proper divisors (6158611201).

42400357439 is a wasteful number, since it uses less digits than its factorization.

42400357439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 42400357439 in words is "forty-two billion, four hundred million, three hundred fifty-seven thousand, four hundred thirty-nine".