72202139 has 8 divisors (see below), whose sum is σ = 72809280. Its totient is φ = 71598016.

The previous prime is 72202127. The next prime is 72202157. The reversal of 72202139 is 93120227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72202139 - 2²⁴ = 55424923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72205139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75287 + ... + 76239.

It is an arithmetic number, because the mean of its divisors is an integer number (9101160).

Almost surely, 2^72202139 is an apocalyptic number.

72202139 is a deficient number, since it is larger than the sum of its proper divisors (607141).

72202139 is a wasteful number, since it uses less digits than its factorization.

72202139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 72202139 is about 8497.1841806566. The cubic root of 72202139 is about 416.4057212699.

The spelling of 72202139 in words is "seventy-two million, two hundred two thousand, one hundred thirty-nine".