424672521 has 32 divisors (see below), whose sum is σ = 698600448. Its totient is φ = 223456320.

The previous prime is 424672519. The next prime is 424672541. The reversal of 424672521 is 125276424.

It is not a de Polignac number, because 424672521 - 2¹ = 424672519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424672541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125826 + ... + 129156.

It is an arithmetic number, because the mean of its divisors is an integer number (21831264).

Almost surely, 2^424672521 is an apocalyptic number.

It is an amenable number.

424672521 is a deficient number, since it is larger than the sum of its proper divisors (273927927).

424672521 is a wasteful number, since it uses less digits than its factorization.

424672521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821.

The product of its digits is 26880, while the sum is 33.

The square root of 424672521 is about 20607.5840650960. The cubic root of 424672521 is about 751.6541393044.

It can be divided in two parts, 4246 and 72521, that added together give a palindrome (76767).

The spelling of 424672521 in words is "four hundred twenty-four million, six hundred seventy-two thousand, five hundred twenty-one".