111652139 has 4 divisors (see below), whose sum is σ = 111723480. Its totient is φ = 111580800.

The previous prime is 111652129. The next prime is 111652153. The reversal of 111652139 is 931256111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931256111 = 601 ⋅1549511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111652139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111652129) 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, 33269 + ... + 36470.

It is an arithmetic number, because the mean of its divisors is an integer number (27930870).

Almost surely, 2^111652139 is an apocalyptic number.

111652139 is a deficient number, since it is larger than the sum of its proper divisors (71341).

111652139 is an equidigital number, since it uses as much as digits as its factorization.

111652139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71340.

The product of its digits is 1620, while the sum is 29.

The square root of 111652139 is about 10566.5575756724. The cubic root of 111652139 is about 481.5288909366.

The spelling of 111652139 in words is "one hundred eleven million, six hundred fifty-two thousand, one hundred thirty-nine".