42499456842 has 32 divisors (see below), whose sum is σ = 89485070400. Its totient is φ = 13419001728.

The previous prime is 42499456837. The next prime is 42499456871. The reversal of 42499456842 is 24865499424.

It is a super-2 number, since 2×42499456842² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951384 + ... + 995052.

It is an arithmetic number, because the mean of its divisors is an integer number (2796408450).

Almost surely, 2^42499456842 is an apocalyptic number.

42499456842 is an abundant number, since it is smaller than the sum of its proper divisors (46985613558).

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

42499456842 is a wasteful number, since it uses less digits than its factorization.

42499456842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52230.

The product of its digits is 19906560, while the sum is 57.

The spelling of 42499456842 in words is "forty-two billion, four hundred ninety-nine million, four hundred fifty-six thousand, eight hundred forty-two".