1261432 has 8 divisors (see below), whose sum is σ = 2365200. Its totient is φ = 630712.

The previous prime is 1261427. The next prime is 1261459. The reversal of 1261432 is 2341621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78832 + ... + 78847.

It is an arithmetic number, because the mean of its divisors is an integer number (295650).

2^1261432 is an apocalyptic number.

It is an amenable number.

1261432 is a deficient number, since it is larger than the sum of its proper divisors (1103768).

1261432 is a wasteful number, since it uses less digits than its factorization.

1261432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157685 (or 157681 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 1261432 is about 1123.1348983982. The cubic root of 1261432 is about 108.0491317378.

The spelling of 1261432 in words is "one million, two hundred sixty-one thousand, four hundred thirty-two".