42152722658 has 6 divisors (see below), whose sum is σ = 63229519521. Its totient is φ = 21076216152.

The previous prime is 42152722639. The next prime is 42152722687. The reversal of 42152722658 is 85622725124.

It can be written as a sum of positive squares in 2 ways, for example, as 21961165249 + 20191557409 = 148193^2 + 142097^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145177.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 217766 + ... + 362942.

Almost surely, 2^42152722658 is an apocalyptic number.

42152722658 is a deficient number, since it is larger than the sum of its proper divisors (21076796863).

42152722658 is an frugal number, since it uses more digits than its factorization.

42152722658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290356 (or 145179 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The spelling of 42152722658 in words is "forty-two billion, one hundred fifty-two million, seven hundred twenty-two thousand, six hundred fifty-eight".