1421004 has 24 divisors (see below), whose sum is σ = 3571120. Its totient is φ = 437184.

The previous prime is 1420999. The next prime is 1421011. The reversal of 1421004 is 4001241.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4399 + ... + 4710.

2^1421004 is an apocalyptic number.

It is an amenable number.

1421004 is an abundant number, since it is smaller than the sum of its proper divisors (2150116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421004 is a wasteful number, since it uses less digits than its factorization.

1421004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129 (or 9127 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1421004 is about 1192.0587233857. The cubic root of 1421004 is about 112.4255705217.

Adding to 1421004 its reverse (4001241), we get a palindrome (5422245).

The spelling of 1421004 in words is "one million, four hundred twenty-one thousand, four".