103009921 has 8 divisors (see below), whose sum is σ = 118324800. Its totient is φ = 87844848.

The previous prime is 103009913. The next prime is 103009937. The reversal of 103009921 is 129900301.

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

It is not a de Polignac number, because 103009921 - 2³ = 103009913 is a prime.

It is a super-2 number, since 2×103009921² = 21222087648852482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103009021) 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, 35971 + ... + 38728.

It is an arithmetic number, because the mean of its divisors is an integer number (14790600).

Almost surely, 2^103009921 is an apocalyptic number.

It is an amenable number.

103009921 is a deficient number, since it is larger than the sum of its proper divisors (15314879).

103009921 is an equidigital number, since it uses as much as digits as its factorization.

103009921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74903.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 103009921 is about 10149.3803259115. The cubic root of 103009921 is about 468.7698644974.

The spelling of 103009921 in words is "one hundred three million, nine thousand, nine hundred twenty-one".