1424921 has 4 divisors (see below), whose sum is σ = 1427472. Its totient is φ = 1422372.

The previous prime is 1424911. The next prime is 1424933. The reversal of 1424921 is 1294241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1424921 - 2¹⁰ = 1423897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1424911) 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, 35 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (356868).

2^1424921 is an apocalyptic number.

It is an amenable number.

1424921 is a deficient number, since it is larger than the sum of its proper divisors (2551).

1424921 is an equidigital number, since it uses as much as digits as its factorization.

1424921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550.

The product of its digits is 576, while the sum is 23.

The square root of 1424921 is about 1193.7005487140. The cubic root of 1424921 is about 112.5287761779.

The spelling of 1424921 in words is "one million, four hundred twenty-four thousand, nine hundred twenty-one".