1272998413 has 8 divisors (see below), whose sum is σ = 1317634200. Its totient is φ = 1228411968.

The previous prime is 1272998407. The next prime is 1272998429. The reversal of 1272998413 is 3148992721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23941449 + 1249056964 = 4893^2 + 35342^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272998413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272998453) 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, 44703 + ... + 67411.

It is an arithmetic number, because the mean of its divisors is an integer number (164704275).

Almost surely, 2^1272998413 is an apocalyptic number.

It is an amenable number.

1272998413 is a deficient number, since it is larger than the sum of its proper divisors (44635787).

1272998413 is a wasteful number, since it uses less digits than its factorization.

1272998413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24671.

The product of its digits is 217728, while the sum is 46.

The square root of 1272998413 is about 35679.1033099208. The cubic root of 1272998413 is about 1083.7837143884.

The spelling of 1272998413 in words is "one billion, two hundred seventy-two million, nine hundred ninety-eight thousand, four hundred thirteen".