1264921 has 8 divisors (see below), whose sum is σ = 1457280. Its totient is φ = 1075488.

The previous prime is 1264909. The next prime is 1264933. The reversal of 1264921 is 1294621.

It is an interprime number because it is at equal distance from previous prime (1264909) and next prime (1264933).

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 1264921 - 2⁵ = 1264889 is a prime.

It is a Duffinian number.

1264921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1264981) 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, 300 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (182160).

2^1264921 is an apocalyptic number.

It is an amenable number.

1264921 is a deficient number, since it is larger than the sum of its proper divisors (192359).

1264921 is a wasteful number, since it uses less digits than its factorization.

1264921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463.

The product of its digits is 864, while the sum is 25.

The square root of 1264921 is about 1124.6870675881. The cubic root of 1264921 is about 108.1486578814.

The spelling of 1264921 in words is "one million, two hundred sixty-four thousand, nine hundred twenty-one".