214121032440 has 128 divisors (see below), whose sum is σ = 747980904960. Its totient is φ = 48018507264.

The previous prime is 214121032421. The next prime is 214121032471. The reversal of 214121032440 is 44230121412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 214121032440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2360254 + ... + 2449293.

It is an arithmetic number, because the mean of its divisors is an integer number (5843600820).

Almost surely, 2^214121032440 is an apocalyptic number.

214121032440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214121032440 is an abundant number, since it is smaller than the sum of its proper divisors (533859872520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214121032440 is a wasteful number, since it uses less digits than its factorization.

214121032440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809621 (or 4809617 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 214121032440 its reverse (44230121412), we get a palindrome (258351153852).

The spelling of 214121032440 in words is "two hundred fourteen billion, one hundred twenty-one million, thirty-two thousand, four hundred forty".