21142114 has 32 divisors (see below), whose sum is σ = 37253376. Its totient is φ = 8812800.

The previous prime is 21142109. The next prime is 21142123. The reversal of 21142114 is 41124112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139939 + ... + 140089.

It is an arithmetic number, because the mean of its divisors is an integer number (1164168).

Almost surely, 2^21142114 is an apocalyptic number.

21142114 is a deficient number, since it is larger than the sum of its proper divisors (16111262).

21142114 is a wasteful number, since it uses less digits than its factorization.

21142114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its digits is 64, while the sum is 16.

The square root of 21142114 is about 4598.0554585607. The cubic root of 21142114 is about 276.5133709895.

Adding to 21142114 its reverse (41124112), we get a palindrome (62266226).

The spelling of 21142114 in words is "twenty-one million, one hundred forty-two thousand, one hundred fourteen".