1249251 has 4 divisors (see below), whose sum is σ = 1665672. Its totient is φ = 832832.

The previous prime is 1249247. The next prime is 1249273. The reversal of 1249251 is 1529421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1249251 - 2² = 1249247 is a prime.

It is a super-2 number, since 2×1249251² = 3121256122002, which contains 22 as substring.

It is a D-number.

1249251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1249201) 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, 208206 + ... + 208211.

It is an arithmetic number, because the mean of its divisors is an integer number (416418).

2^1249251 is an apocalyptic number.

1249251 is a deficient number, since it is larger than the sum of its proper divisors (416421).

1249251 is an equidigital number, since it uses as much as digits as its factorization.

1249251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416420.

The product of its digits is 720, while the sum is 24.

The square root of 1249251 is about 1117.6989755744. The cubic root of 1249251 is about 107.7002145817.

The spelling of 1249251 in words is "one million, two hundred forty-nine thousand, two hundred fifty-one".