424761021 has 6 divisors (see below), whose sum is σ = 613543710. Its totient is φ = 283174008.

The previous prime is 424761013. The next prime is 424761023. The reversal of 424761021 is 120167424.

424761021 is a `hidden beast` number, since 4 + 2 + 47 + 610 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 413105625 + 11655396 = 20325^2 + 3414^2 .

It is not a de Polignac number, because 424761021 - 2³ = 424761013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424761023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23597826 + ... + 23597843.

It is an arithmetic number, because the mean of its divisors is an integer number (102257285).

Almost surely, 2^424761021 is an apocalyptic number.

It is an amenable number.

424761021 is a deficient number, since it is larger than the sum of its proper divisors (188782689).

424761021 is a wasteful number, since it uses less digits than its factorization.

424761021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47195675 (or 47195672 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 424761021 is about 20609.7312209548. The cubic root of 424761021 is about 751.7063495508.

The spelling of 424761021 in words is "four hundred twenty-four million, seven hundred sixty-one thousand, twenty-one".