103121940 has 24 divisors (see below), whose sum is σ = 288741600. Its totient is φ = 27499168.

The previous prime is 103121927. The next prime is 103121959. The reversal of 103121940 is 49121301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859290 + ... + 859409.

It is an arithmetic number, because the mean of its divisors is an integer number (12030900).

Almost surely, 2^103121940 is an apocalyptic number.

103121940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103121940 is an abundant number, since it is smaller than the sum of its proper divisors (185619660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103121940 is a wasteful number, since it uses less digits than its factorization.

103121940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718711 (or 1718709 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 103121940 is about 10154.8973406923. The cubic root of 103121940 is about 468.9397255098.

The spelling of 103121940 in words is "one hundred three million, one hundred twenty-one thousand, nine hundred forty".