1272531 has 16 divisors (see below), whose sum is σ = 1858304. Its totient is φ = 769824.

The previous prime is 1272461. The next prime is 1272539. The reversal of 1272531 is 1352721.

It is not a de Polignac number, because 1272531 - 2¹⁰ = 1271507 is a prime.

It is a super-2 number, since 2×1272531² = 3238670291922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1272498 and 1272507.

It is not an unprimeable number, because it can be changed into a prime (1272539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2370 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (116144).

2^1272531 is an apocalyptic number.

1272531 is a deficient number, since it is larger than the sum of its proper divisors (585773).

1272531 is a wasteful number, since it uses less digits than its factorization.

1272531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its digits is 420, while the sum is 21.

The square root of 1272531 is about 1128.0651576926. The cubic root of 1272531 is about 108.3651052110.

The spelling of 1272531 in words is "one million, two hundred seventy-two thousand, five hundred thirty-one".