424995021 has 24 divisors (see below), whose sum is σ = 704939040. Its totient is φ = 244015200.

The previous prime is 424994963. The next prime is 424995041. The reversal of 424995021 is 120599424.

It is not a de Polignac number, because 424995021 - 2⁷ = 424994893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424995041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111090 + ... + 114851.

It is an arithmetic number, because the mean of its divisors is an integer number (29372460).

Almost surely, 2^424995021 is an apocalyptic number.

It is an amenable number.

424995021 is a deficient number, since it is larger than the sum of its proper divisors (279944019).

424995021 is a wasteful number, since it uses less digits than its factorization.

424995021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225977 (or 225974 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 424995021 is about 20615.4073692469. The cubic root of 424995021 is about 751.8443620536.

The spelling of 424995021 in words is "four hundred twenty-four million, nine hundred ninety-five thousand, twenty-one".