1272076402 has 4 divisors (see below), whose sum is σ = 1908114606. Its totient is φ = 636038200.

The previous prime is 1272076363. The next prime is 1272076423. The reversal of 1272076402 is 2046702721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1193771601 + 78304801 = 34551^2 + 8849^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318019099 + ... + 318019102.

Almost surely, 2^1272076402 is an apocalyptic number.

1272076402 is a deficient number, since it is larger than the sum of its proper divisors (636038204).

1272076402 is an equidigital number, since it uses as much as digits as its factorization.

1272076402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636038203.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 1272076402 is about 35666.1800870236. The cubic root of 1272076402 is about 1083.5219958499.

The spelling of 1272076402 in words is "one billion, two hundred seventy-two million, seventy-six thousand, four hundred two".