424470521 has 4 divisors (see below), whose sum is σ = 426815844. Its totient is φ = 422125200.

The previous prime is 424470517. The next prime is 424470539. The reversal of 424470521 is 125074424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113124496 + 311346025 = 10636^2 + 17645^2 .

It is a cyclic number.

It is not a de Polignac number, because 424470521 - 2² = 424470517 is a prime.

It is a super-2 number, since 2×424470521² = 360350446396022882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424470511) 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, 1172390 + ... + 1172751.

It is an arithmetic number, because the mean of its divisors is an integer number (106703961).

Almost surely, 2^424470521 is an apocalyptic number.

It is an amenable number.

424470521 is a deficient number, since it is larger than the sum of its proper divisors (2345323).

424470521 is a wasteful number, since it uses less digits than its factorization.

424470521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345322.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 424470521 is about 20602.6823739046. The cubic root of 424470521 is about 751.5349429755.

The spelling of 424470521 in words is "four hundred twenty-four million, four hundred seventy thousand, five hundred twenty-one".