1272379 has 2 divisors, whose sum is σ = 1272380. Its totient is φ = 1272378.

The previous prime is 1272377. The next prime is 1272409. The reversal of 1272379 is 9732721.

1272379 = 458² + 459² + ... + 463².

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272379 - 2¹ = 1272377 is a prime.

Together with 1272377, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1272379.

It is not a weakly prime, because it can be changed into another prime (1272377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636189 + 636190.

It is an arithmetic number, because the mean of its divisors is an integer number (636190).

2^1272379 is an apocalyptic number.

1272379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272379 is an equidigital number, since it uses as much as digits as its factorization.

1272379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 1272379 is about 1127.9977836858. The cubic root of 1272379 is about 108.3607904106.

The spelling of 1272379 in words is "one million, two hundred seventy-two thousand, three hundred seventy-nine".