427642621 has 8 divisors (see below), whose sum is σ = 489461760. Its totient is φ = 366005328.

The previous prime is 427642619. The next prime is 427642627. The reversal of 427642621 is 126246724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 427642621 - 2¹ = 427642619 is a prime.

It is a super-2 number, since 2×427642621² = 365756422591499282, 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 (427642627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40381 + ... + 49858.

It is an arithmetic number, because the mean of its divisors is an integer number (61182720).

Almost surely, 2^427642621 is an apocalyptic number.

It is an amenable number.

427642621 is a deficient number, since it is larger than the sum of its proper divisors (61819139).

427642621 is an equidigital number, since it uses as much as digits as its factorization.

427642621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90923.

The product of its digits is 32256, while the sum is 34.

The square root of 427642621 is about 20679.5217788033. The cubic root of 427642621 is about 753.4023911206.

The spelling of 427642621 in words is "four hundred twenty-seven million, six hundred forty-two thousand, six hundred twenty-one".