42722994138 has 32 divisors (see below), whose sum is σ = 94261164480. Its totient is φ = 12800895360.

The previous prime is 42722994101. The next prime is 42722994233. The reversal of 42722994138 is 83149922724.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3630745 + ... + 3642492.

It is an arithmetic number, because the mean of its divisors is an integer number (2945661390).

Almost surely, 2^42722994138 is an apocalyptic number.

42722994138 is an abundant number, since it is smaller than the sum of its proper divisors (51538170342).

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

42722994138 is a wasteful number, since it uses less digits than its factorization.

42722994138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7273342.

The product of its digits is 1741824, while the sum is 51.

The spelling of 42722994138 in words is "forty-two billion, seven hundred twenty-two million, nine hundred ninety-four thousand, one hundred thirty-eight".