52121601242 has 4 divisors (see below), whose sum is σ = 78182401866. Its totient is φ = 26060800620.

The previous prime is 52121601227. The next prime is 52121601251. The reversal of 52121601242 is 24210612125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41967209881 + 10154391361 = 204859^2 + 100769^2 .

It is a super-2 number, since 2×52121601242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13030400309 + ... + 13030400312.

Almost surely, 2^52121601242 is an apocalyptic number.

52121601242 is a deficient number, since it is larger than the sum of its proper divisors (26060800624).

52121601242 is a wasteful number, since it uses less digits than its factorization.

52121601242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26060800623.

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 52121601242 in words is "fifty-two billion, one hundred twenty-one million, six hundred one thousand, two hundred forty-two".