1292642672 has 10 divisors (see below), whose sum is σ = 2504495208. Its totient is φ = 646321328.

The previous prime is 1292642669. The next prime is 1292642677. The reversal of 1292642672 is 2762462921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292642677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40395068 + ... + 40395099.

Almost surely, 2^1292642672 is an apocalyptic number.

It is an amenable number.

1292642672 is a deficient number, since it is larger than the sum of its proper divisors (1211852536).

1292642672 is an equidigital number, since it uses as much as digits as its factorization.

1292642672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80790175 (or 80790169 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 1292642672 is about 35953.3402064398. The cubic root of 1292642672 is about 1089.3300801697.

The spelling of 1292642672 in words is "one billion, two hundred ninety-two million, six hundred forty-two thousand, six hundred seventy-two".