421562881 has 8 divisors (see below), whose sum is σ = 435985920. Its totient is φ = 407367168.

The previous prime is 421562863. The next prime is 421562917. The reversal of 421562881 is 188265124.

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 421562881 - 2¹³ = 421554689 is a prime.

It is a super-2 number, since 2×421562881² = 355430525274040322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421562881.

It is not an unprimeable number, because it can be changed into a prime (421562681) 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, 53056 + ... + 60481.

It is an arithmetic number, because the mean of its divisors is an integer number (54498240).

Almost surely, 2^421562881 is an apocalyptic number.

It is an amenable number.

421562881 is a deficient number, since it is larger than the sum of its proper divisors (14423039).

421562881 is a wasteful number, since it uses less digits than its factorization.

421562881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113663.

The product of its digits is 30720, while the sum is 37.

The square root of 421562881 is about 20531.9965176307. The cubic root of 421562881 is about 749.8149949605.

The spelling of 421562881 in words is "four hundred twenty-one million, five hundred sixty-two thousand, eight hundred eighty-one".