3972930242 has 4 divisors (see below), whose sum is σ = 5959395366. Its totient is φ = 1986465120.

The previous prime is 3972930233. The next prime is 3972930263. The reversal of 3972930242 is 2420392793.

3972930242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 2802537721 + 1170392521 = 52939^2 + 34211^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3972930242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993232559 + ... + 993232562.

Almost surely, 2^3972930242 is an apocalyptic number.

3972930242 is a deficient number, since it is larger than the sum of its proper divisors (1986465124).

3972930242 is a wasteful number, since it uses less digits than its factorization.

3972930242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986465123.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 3972930242 is about 63031.1846786969. The cubic root of 3972930242 is about 1583.8120634700.

The spelling of 3972930242 in words is "three billion, nine hundred seventy-two million, nine hundred thirty thousand, two hundred forty-two".