214245139 has 4 divisors (see below), whose sum is σ = 216366480. Its totient is φ = 212123800.

The previous prime is 214245113. The next prime is 214245149. The reversal of 214245139 is 931542412.

214245139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 214245139 - 2²¹ = 212147987 is a prime.

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 214245139.

It is not an unprimeable number, because it can be changed into a prime (214245149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060519 + ... + 1060720.

It is an arithmetic number, because the mean of its divisors is an integer number (54091620).

Almost surely, 2^214245139 is an apocalyptic number.

214245139 is a deficient number, since it is larger than the sum of its proper divisors (2121341).

214245139 is a wasteful number, since it uses less digits than its factorization.

214245139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121340.

The product of its digits is 8640, while the sum is 31.

The square root of 214245139 is about 14637.1151187657. The cubic root of 214245139 is about 598.3707083898.

The spelling of 214245139 in words is "two hundred fourteen million, two hundred forty-five thousand, one hundred thirty-nine".