1272850140 has 24 divisors (see below), whose sum is σ = 3563980560. Its totient is φ = 339426688.

The previous prime is 1272850097. The next prime is 1272850151. The reversal of 1272850140 is 410582721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1272850098 and 1272850107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10607025 + ... + 10607144.

It is an arithmetic number, because the mean of its divisors is an integer number (148499190).

Almost surely, 2^1272850140 is an apocalyptic number.

1272850140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272850140 is an abundant number, since it is smaller than the sum of its proper divisors (2291130420).

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

1272850140 is a wasteful number, since it uses less digits than its factorization.

1272850140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214181 (or 21214179 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 1272850140 is about 35677.0253804882. The cubic root of 1272850140 is about 1083.7416347073.

The spelling of 1272850140 in words is "one billion, two hundred seventy-two million, eight hundred fifty thousand, one hundred forty".