10149921 has 8 divisors (see below), whose sum is σ = 15036960. Its totient is φ = 6766596.

The previous prime is 10149911. The next prime is 10149943. The reversal of 10149921 is 12994101.

It is not a de Polignac number, because 10149921 - 2¹⁹ = 9625633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 375923 = 10149921 / (1 + 0 + 1 + 4 + 9 + 9 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (10149911) 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, 187935 + ... + 187988.

It is an arithmetic number, because the mean of its divisors is an integer number (1879620).

Almost surely, 2^10149921 is an apocalyptic number.

It is an amenable number.

10149921 is a deficient number, since it is larger than the sum of its proper divisors (4887039).

10149921 is an equidigital number, since it uses as much as digits as its factorization.

10149921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375932 (or 375926 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 10149921 is about 3185.8940660355. The cubic root of 10149921 is about 216.5147829690.

The spelling of 10149921 in words is "ten million, one hundred forty-nine thousand, nine hundred twenty-one".