1245879 has 18 divisors (see below), whose sum is σ = 1915680. Its totient is φ = 780096.

The previous prime is 1245877. The next prime is 1245883. The reversal of 1245879 is 9785421.

It is not a de Polignac number, because 1245879 - 2¹ = 1245877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245877) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2362 + ... + 2840.

2^1245879 is an apocalyptic number.

1245879 is a deficient number, since it is larger than the sum of its proper divisors (669801).

1245879 is a wasteful number, since it uses less digits than its factorization.

1245879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 499 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1245879 is about 1116.1895000402. The cubic root of 1245879 is about 107.6032251674.

The spelling of 1245879 in words is "one million, two hundred forty-five thousand, eight hundred seventy-nine".