1261436 has 12 divisors (see below), whose sum is σ = 2408280. Its totient is φ = 573360.

The previous prime is 1261427. The next prime is 1261459. The reversal of 1261436 is 6341621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14291 + ... + 14378.

It is an arithmetic number, because the mean of its divisors is an integer number (200690).

2^1261436 is an apocalyptic number.

It is an amenable number.

1261436 is a deficient number, since it is larger than the sum of its proper divisors (1146844).

1261436 is a wasteful number, since it uses less digits than its factorization.

1261436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28684 (or 28682 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1261436 is about 1123.1366791268. The cubic root of 1261436 is about 108.0492459456.

The spelling of 1261436 in words is "one million, two hundred sixty-one thousand, four hundred thirty-six".