214284742281 has 9 divisors (see below), whose sum is σ = 309524411469. Its totient is φ = 142855569036.

The previous prime is 214284742279. The next prime is 214284742291. The reversal of 214284742281 is 182247482412.

The square root of 214284742281 is 462909.

It is a perfect power (a square), and thus also a powerful number.

214284742281 is a `hidden beast` number, since 2 + 142 + 8 + 4 + 7 + 422 + 81 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 214284742281 - 2¹ = 214284742279 is a prime.

It is a super-2 number, since 2×214284742281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (214284742241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1311576 + ... + 1465878.

Almost surely, 2^214284742281 is an apocalyptic number.

214284742281 is the 462909-th square number.

214284742281 is the 231455-th centered octagonal number.

It is an amenable number.

214284742281 is a deficient number, since it is larger than the sum of its proper divisors (95239669188).

214284742281 is an frugal number, since it uses more digits than its factorization.

214284742281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308612 (or 154306 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The spelling of 214284742281 in words is "two hundred fourteen billion, two hundred eighty-four million, seven hundred forty-two thousand, two hundred eighty-one".