101406139 has 4 divisors (see below), whose sum is σ = 107371224. Its totient is φ = 95441056.

The previous prime is 101406131. The next prime is 101406157. The reversal of 101406139 is 931604101.

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 101406139 - 2³ = 101406131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101406131) 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, 2982517 + ... + 2982550.

It is an arithmetic number, because the mean of its divisors is an integer number (26842806).

Almost surely, 2^101406139 is an apocalyptic number.

101406139 is a deficient number, since it is larger than the sum of its proper divisors (5965085).

101406139 is an equidigital number, since it uses as much as digits as its factorization.

101406139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965084.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 101406139 is about 10070.0615191765. The cubic root of 101406139 is about 466.3243381148.

The spelling of 101406139 in words is "one hundred one million, four hundred six thousand, one hundred thirty-nine".