1421564 has 12 divisors (see below), whose sum is σ = 2498664. Its totient is φ = 707664.

The previous prime is 1421549. The next prime is 1421569. The reversal of 1421564 is 4651241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421569) 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, 467 + ... + 1749.

It is an arithmetic number, because the mean of its divisors is an integer number (208222).

2^1421564 is an apocalyptic number.

It is an amenable number.

1421564 is a deficient number, since it is larger than the sum of its proper divisors (1077100).

1421564 is a wasteful number, since it uses less digits than its factorization.

1421564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1562 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 1421564 is about 1192.2935880059. The cubic root of 1421564 is about 112.4403370884.

The spelling of 1421564 in words is "one million, four hundred twenty-one thousand, five hundred sixty-four".