1261956 has 24 divisors (see below), whose sum is σ = 2976064. Its totient is φ = 416160.

The previous prime is 1261943. The next prime is 1261963. The reversal of 1261956 is 6591621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 1746.

2^1261956 is an apocalyptic number.

It is an amenable number.

1261956 is an abundant number, since it is smaller than the sum of its proper divisors (1714108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261956 is a wasteful number, since it uses less digits than its factorization.

1261956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131 (or 1129 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 1261956 is about 1123.3681498066. The cubic root of 1261956 is about 108.0640909025.

The spelling of 1261956 in words is "one million, two hundred sixty-one thousand, nine hundred fifty-six".