1249157 has 24 divisors (see below), whose sum is σ = 1637496. Its totient is φ = 943488.

The previous prime is 1249151. The next prime is 1249159. The reversal of 1249157 is 7519421.

It can be written as a sum of positive squares in 4 ways, for example, as 329476 + 919681 = 574^2 + 959^2 .

It is not a de Polignac number, because 1249157 - 2⁴ = 1249141 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23543 + ... + 23595.

It is an arithmetic number, because the mean of its divisors is an integer number (68229).

2^1249157 is an apocalyptic number.

It is an amenable number.

1249157 is a deficient number, since it is larger than the sum of its proper divisors (388339).

1249157 is a wasteful number, since it uses less digits than its factorization.

1249157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 110 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 1249157 is about 1117.6569241051. The cubic root of 1249157 is about 107.6975132099.

The spelling of 1249157 in words is "one million, two hundred forty-nine thousand, one hundred fifty-seven".