3215715242 has 4 divisors (see below), whose sum is σ = 4823572866. Its totient is φ = 1607857620.

The previous prime is 3215715229. The next prime is 3215715259. The reversal of 3215715242 is 2425175123.

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., 1686827041 + 1528888201 = 41071^2 + 39101^2 .

It is a super-2 number, since 2×3215715242² = 20681649035262237128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3215715199 and 3215715208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803928809 + ... + 803928812.

Almost surely, 2^3215715242 is an apocalyptic number.

3215715242 is a deficient number, since it is larger than the sum of its proper divisors (1607857624).

3215715242 is a wasteful number, since it uses less digits than its factorization.

3215715242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607857623.

The product of its digits is 16800, while the sum is 32.

The square root of 3215715242 is about 56707.2767993668. The cubic root of 3215715242 is about 1476.0209715050.

The spelling of 3215715242 in words is "three billion, two hundred fifteen million, seven hundred fifteen thousand, two hundred forty-two".