424552421 has 4 divisors (see below), whose sum is σ = 424938432. Its totient is φ = 424166412.

The previous prime is 424552391. The next prime is 424552481. The reversal of 424552421 is 124255424.

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 424552421 - 2¹⁴ = 424536037 is a prime.

It is a super-2 number, since 2×424552421² = 360489516353922482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424552481) 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, 191351 + ... + 193556.

It is an arithmetic number, because the mean of its divisors is an integer number (106234608).

Almost surely, 2^424552421 is an apocalyptic number.

It is an amenable number.

424552421 is a deficient number, since it is larger than the sum of its proper divisors (386011).

424552421 is a wasteful number, since it uses less digits than its factorization.

424552421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386010.

The product of its digits is 12800, while the sum is 29.

The square root of 424552421 is about 20604.6698833056. The cubic root of 424552421 is about 751.5832751530.

The spelling of 424552421 in words is "four hundred twenty-four million, five hundred fifty-two thousand, four hundred twenty-one".