1172722642 has 32 divisors (see below), whose sum is σ = 2167490304. Its totient is φ = 463406400.

The previous prime is 1172722627. The next prime is 1172722657. The reversal of 1172722642 is 2462272711.

It is an interprime number because it is at equal distance from previous prime (1172722627) and next prime (1172722657).

It is a junction number, because it is equal to n+sod(n) for n = 1172722598 and 1172722607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182667 + ... + 188977.

It is an arithmetic number, because the mean of its divisors is an integer number (67734072).

Almost surely, 2^1172722642 is an apocalyptic number.

1172722642 is a deficient number, since it is larger than the sum of its proper divisors (994767662).

1172722642 is a wasteful number, since it uses less digits than its factorization.

1172722642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354.

The product of its digits is 18816, while the sum is 34.

The square root of 1172722642 is about 34245.0382099363. The cubic root of 1172722642 is about 1054.5449673236.

The spelling of 1172722642 in words is "one billion, one hundred seventy-two million, seven hundred twenty-two thousand, six hundred forty-two".