1272573140 has 12 divisors (see below), whose sum is σ = 2672403636. Its totient is φ = 509029248.

The previous prime is 1272573139. The next prime is 1272573151. The reversal of 1272573140 is 413752721.

It can be written as a sum of positive squares in 2 ways, for example, as 220997956 + 1051575184 = 14866^2 + 32428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1272573097 and 1272573106.

It is a congruent number.

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, 31814309 + ... + 31814348.

It is an arithmetic number, because the mean of its divisors is an integer number (222700303).

Almost surely, 2^1272573140 is an apocalyptic number.

1272573140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272573140 is an abundant number, since it is smaller than the sum of its proper divisors (1399830496).

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

1272573140 is a wasteful number, since it uses less digits than its factorization.

1272573140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63628666 (or 63628664 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1272573140 is about 35673.1431191590. The cubic root of 1272573140 is about 1083.6630137179.

The spelling of 1272573140 in words is "one billion, two hundred seventy-two million, five hundred seventy-three thousand, one hundred forty".