2139254452 has 12 divisors (see below), whose sum is σ = 3771022500. Its totient is φ = 1061819456.

The previous prime is 2139254443. The next prime is 2139254489. The reversal of 2139254452 is 2544529312.

It can be written as a sum of positive squares in 2 ways, for example, as 1076233636 + 1063020816 = 32806^2 + 32604^2 .

It is a super-2 number, since 2×2139254452² = 9152819220803640608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1951327 + ... + 1952422.

It is an arithmetic number, because the mean of its divisors is an integer number (314251875).

Almost surely, 2^2139254452 is an apocalyptic number.

It is an amenable number.

2139254452 is a deficient number, since it is larger than the sum of its proper divisors (1631768048).

2139254452 is a wasteful number, since it uses less digits than its factorization.

2139254452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903890 (or 3903888 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 2139254452 is about 46252.0751102045. The cubic root of 2139254452 is about 1288.5090745450.

The spelling of 2139254452 in words is "two billion, one hundred thirty-nine million, two hundred fifty-four thousand, four hundred fifty-two".