1249257 has 4 divisors (see below), whose sum is σ = 1665680. Its totient is φ = 832836.

The previous prime is 1249247. The next prime is 1249273. The reversal of 1249257 is 7529421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7529421 = 3 ⋅2509807.

It is not a de Polignac number, because 1249257 - 2¹¹ = 1247209 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1249217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208207 + ... + 208212.

It is an arithmetic number, because the mean of its divisors is an integer number (416420).

2^1249257 is an apocalyptic number.

It is an amenable number.

1249257 is a deficient number, since it is larger than the sum of its proper divisors (416423).

1249257 is an equidigital number, since it uses as much as digits as its factorization.

1249257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416422.

The product of its digits is 5040, while the sum is 30.

The square root of 1249257 is about 1117.7016596570. The cubic root of 1249257 is about 107.7003870051.

The spelling of 1249257 in words is "one million, two hundred forty-nine thousand, two hundred fifty-seven".