139261103 has 4 divisors (see below), whose sum is σ = 144063240. Its totient is φ = 134458968.

The previous prime is 139261099. The next prime is 139261117. The reversal of 139261103 is 301162931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301162931 = 79 ⋅3812189.

It is a cyclic number.

It is not a de Polignac number, because 139261103 - 2² = 139261099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139261183) 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, 2401025 + ... + 2401082.

It is an arithmetic number, because the mean of its divisors is an integer number (36015810).

Almost surely, 2^139261103 is an apocalyptic number.

139261103 is a deficient number, since it is larger than the sum of its proper divisors (4802137).

139261103 is an equidigital number, since it uses as much as digits as its factorization.

139261103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802136.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 139261103 is about 11800.8941610371. The cubic root of 139261103 is about 518.3342939870.

The spelling of 139261103 in words is "one hundred thirty-nine million, two hundred sixty-one thousand, one hundred three".