139111427 has 8 divisors (see below), whose sum is σ = 171214176. Its totient is φ = 110066112.

The previous prime is 139111421. The next prime is 139111433. The reversal of 139111427 is 724111931.

It is an interprime number because it is at equal distance from previous prime (139111421) and next prime (139111433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139111427 - 2¹⁶ = 139045891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139111427.

It is not an unprimeable number, because it can be changed into a prime (139111421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764258 + ... + 764439.

It is an arithmetic number, because the mean of its divisors is an integer number (21401772).

Almost surely, 2^139111427 is an apocalyptic number.

139111427 is a deficient number, since it is larger than the sum of its proper divisors (32102749).

139111427 is a wasteful number, since it uses less digits than its factorization.

139111427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528717.

The product of its digits is 1512, while the sum is 29.

The square root of 139111427 is about 11794.5507332836. The cubic root of 139111427 is about 518.1485277931.

The spelling of 139111427 in words is "one hundred thirty-nine million, one hundred eleven thousand, four hundred twenty-seven".