1272950245 has 16 divisors (see below), whose sum is σ = 1752410880. Its totient is φ = 869554944.

The previous prime is 1272950213. The next prime is 1272950279. The reversal of 1272950245 is 5420592721.

It is a cyclic number.

It is not a de Polignac number, because 1272950245 - 2⁵ = 1272950213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59940 + ... + 78349.

It is an arithmetic number, because the mean of its divisors is an integer number (109525680).

Almost surely, 2^1272950245 is an apocalyptic number.

It is an amenable number.

1272950245 is a deficient number, since it is larger than the sum of its proper divisors (479460635).

1272950245 is a wasteful number, since it uses less digits than its factorization.

1272950245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138564.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 1272950245 is about 35678.4282865711. The cubic root of 1272950245 is about 1083.7700447321.

The spelling of 1272950245 in words is "one billion, two hundred seventy-two million, nine hundred fifty thousand, two hundred forty-five".