10242921 has 24 divisors (see below), whose sum is σ = 15020640. Its totient is φ = 6205056.

The previous prime is 10242899. The next prime is 10242929. The reversal of 10242921 is 12924201.

10242921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10242921 - 2¹⁸ = 9980777 is a prime.

It is a super-2 number, since 2×10242921² = 209834861224482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10242929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45010 + ... + 45236.

It is an arithmetic number, because the mean of its divisors is an integer number (625860).

Almost surely, 2^10242921 is an apocalyptic number.

It is an amenable number.

10242921 is a deficient number, since it is larger than the sum of its proper divisors (4777719).

10242921 is a wasteful number, since it uses less digits than its factorization.

10242921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 10242921 is about 3200.4563737067. The cubic root of 10242921 is about 217.1740553174.

The spelling of 10242921 in words is "ten million, two hundred forty-two thousand, nine hundred twenty-one".