1272468491 has 8 divisors (see below), whose sum is σ = 1517478144. Its totient is φ = 1043265960.

The previous prime is 1272468481. The next prime is 1272468521. The reversal of 1272468491 is 1948642721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1272468491 - 2¹⁴ = 1272452107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272468481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3951605 + ... + 3951926.

It is an arithmetic number, because the mean of its divisors is an integer number (189684768).

Almost surely, 2^1272468491 is an apocalyptic number.

1272468491 is a deficient number, since it is larger than the sum of its proper divisors (245009653).

1272468491 is an equidigital number, since it uses as much as digits as its factorization.

1272468491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903561.

The product of its digits is 193536, while the sum is 44.

The square root of 1272468491 is about 35671.6763132881. The cubic root of 1272468491 is about 1083.6333081930.

The spelling of 1272468491 in words is "one billion, two hundred seventy-two million, four hundred sixty-eight thousand, four hundred ninety-one".