10140921 has 12 divisors (see below), whose sum is σ = 16740672. Its totient is φ = 5794776.

The previous prime is 10140917. The next prime is 10140943. The reversal of 10140921 is 12904101.

It is not a de Polignac number, because 10140921 - 2² = 10140917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10140894 and 10140903.

It is not an unprimeable number, because it can be changed into a prime (10140901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80421 + ... + 80546.

It is an arithmetic number, because the mean of its divisors is an integer number (1395056).

Almost surely, 2^10140921 is an apocalyptic number.

It is an amenable number.

10140921 is a deficient number, since it is larger than the sum of its proper divisors (6599751).

10140921 is a wasteful number, since it uses less digits than its factorization.

10140921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160980 (or 160977 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 10140921 is about 3184.4812764405. The cubic root of 10140921 is about 216.4507690295.

The spelling of 10140921 in words is "ten million, one hundred forty thousand, nine hundred twenty-one".