214175421 has 10 divisors (see below), whose sum is σ = 319941182. Its totient is φ = 142783560.

The previous prime is 214175393. The next prime is 214175443. The reversal of 214175421 is 124571412.

214175421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 125552025 + 88623396 = 11205^2 + 9414^2 .

It is not a de Polignac number, because 214175421 - 2¹¹ = 214173373 is a prime.

It is a super-2 number, since 2×214175421² = 91742221921054482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214175461) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1321990 + ... + 1322151.

Almost surely, 2^214175421 is an apocalyptic number.

It is an amenable number.

214175421 is a deficient number, since it is larger than the sum of its proper divisors (105765761).

214175421 is an equidigital number, since it uses as much as digits as its factorization.

214175421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644153 (or 2644144 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 214175421 is about 14634.7333764575. The cubic root of 214175421 is about 598.3057956219.

The spelling of 214175421 in words is "two hundred fourteen million, one hundred seventy-five thousand, four hundred twenty-one".