1272407 has 4 divisors (see below), whose sum is σ = 1277616. Its totient is φ = 1267200.

The previous prime is 1272379. The next prime is 1272409. The reversal of 1272407 is 7042721.

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

It is a cyclic number.

It is not a de Polignac number, because 1272407 - 2⁶ = 1272343 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 (1272409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219 + ... + 2732.

It is an arithmetic number, because the mean of its divisors is an integer number (319404).

2^1272407 is an apocalyptic number.

1272407 is a deficient number, since it is larger than the sum of its proper divisors (5209).

1272407 is an equidigital number, since it uses as much as digits as its factorization.

1272407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 1272407 is about 1128.0101949894. The cubic root of 1272407 is about 108.3615852680.

Subtracting from 1272407 its sum of digits (23), we obtain a square (1272384 = 1128²).

The spelling of 1272407 in words is "one million, two hundred seventy-two thousand, four hundred seven".