427402581 has 8 divisors (see below), whose sum is σ = 578375904. Its totient is φ = 280682160.

The previous prime is 427402579. The next prime is 427402589. The reversal of 427402581 is 185204724.

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

It is not a de Polignac number, because 427402581 - 2¹ = 427402579 is a prime.

It is a super-2 number, since 2×427402581² = 365345932490923122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427402589) 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, 1062990 + ... + 1063391.

It is an arithmetic number, because the mean of its divisors is an integer number (72296988).

Almost surely, 2^427402581 is an apocalyptic number.

It is an amenable number.

427402581 is a deficient number, since it is larger than the sum of its proper divisors (150973323).

427402581 is a wasteful number, since it uses less digits than its factorization.

427402581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126451.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 427402581 is about 20673.7171548805. The cubic root of 427402581 is about 753.2614006856.

The spelling of 427402581 in words is "four hundred twenty-seven million, four hundred two thousand, five hundred eighty-one".