1248561972 has 96 divisors (see below), whose sum is σ = 3894195200. Its totient is φ = 337952736.

The previous prime is 1248561959. The next prime is 1248562001. The reversal of 1248561972 is 2791658421.

1248561972 is a `hidden beast` number, since 1 + 24 + 8 + 5 + 619 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29098 + ... + 57825.

Almost surely, 2^1248561972 is an apocalyptic number.

1248561972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1248561972 is an abundant number, since it is smaller than the sum of its proper divisors (2645633228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1248561972 is a wasteful number, since it uses less digits than its factorization.

1248561972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86962 (or 86954 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1248561972 is about 35334.9964199800. The cubic root of 1248561972 is about 1076.8041015194.

The spelling of 1248561972 in words is "one billion, two hundred forty-eight million, five hundred sixty-one thousand, nine hundred seventy-two".