1245881 has 8 divisors (see below), whose sum is σ = 1533504. Its totient is φ = 985680.

The previous prime is 1245877. The next prime is 1245883. The reversal of 1245881 is 1885421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1245881 - 2² = 1245877 is a prime.

It is a super-2 number, since 2×1245881² = 3104438932322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1245883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (191688).

2^1245881 is an apocalyptic number.

It is an amenable number.

1245881 is a deficient number, since it is larger than the sum of its proper divisors (287623).

1245881 is a wasteful number, since it uses less digits than its factorization.

1245881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711.

The product of its digits is 2560, while the sum is 29.

The square root of 1245881 is about 1116.1903959451. The cubic root of 1245881 is about 107.6032827456.

The spelling of 1245881 in words is "one million, two hundred forty-five thousand, eight hundred eighty-one".