1292947972 has 12 divisors (see below), whose sum is σ = 2283418060. Its totient is φ = 640542816.

The previous prime is 1292947963. The next prime is 1292948003. The reversal of 1292947972 is 2797492921.

It can be written as a sum of positive squares in 2 ways, for example, as 405861316 + 887086656 = 20146^2 + 29784^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1482303 + ... + 1483174.

Almost surely, 2^1292947972 is an apocalyptic number.

It is an amenable number.

1292947972 is a deficient number, since it is larger than the sum of its proper divisors (990470088).

1292947972 is a wasteful number, since it uses less digits than its factorization.

1292947972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965590 (or 2965588 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 1292947972 is about 35957.5857365313. The cubic root of 1292947972 is about 1089.4158337714.

The spelling of 1292947972 in words is "one billion, two hundred ninety-two million, nine hundred forty-seven thousand, nine hundred seventy-two".