1251396 has 24 divisors (see below), whose sum is σ = 3244640. Its totient is φ = 417096.

The previous prime is 1251329. The next prime is 1251409. The reversal of 1251396 is 6931521.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 5686 + ... + 5901.

2^1251396 is an apocalyptic number.

It is an amenable number.

1251396 is an abundant number, since it is smaller than the sum of its proper divisors (1993244).

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

1251396 is a wasteful number, since it uses less digits than its factorization.

1251396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11600 (or 11592 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1251396 is about 1118.6581247191. The cubic root of 1251396 is about 107.7618207935.

It can be divided in two parts, 125 and 1396, that added together give a square (1521 = 39²).

The spelling of 1251396 in words is "one million, two hundred fifty-one thousand, three hundred ninety-six".