103121939 has 8 divisors (see below), whose sum is σ = 105692160. Its totient is φ = 100583496.

The previous prime is 103121927. The next prime is 103121959. The reversal of 103121939 is 939121301.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103121939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103121959) 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, 1307 + ... + 14420.

It is an arithmetic number, because the mean of its divisors is an integer number (13211520).

Almost surely, 2^103121939 is an apocalyptic number.

103121939 is a deficient number, since it is larger than the sum of its proper divisors (2570221).

103121939 is an equidigital number, since it uses as much as digits as its factorization.

103121939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15889.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 103121939 is about 10154.8972914550. The cubic root of 103121939 is about 468.9397239940.

The spelling of 103121939 in words is "one hundred three million, one hundred twenty-one thousand, nine hundred thirty-nine".