10124021 has 4 divisors (see below), whose sum is σ = 10146444. Its totient is φ = 10101600.

The previous prime is 10124003. The next prime is 10124039. The reversal of 10124021 is 12042101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12042101 = 107 ⋅112543.

It is an interprime number because it is at equal distance from previous prime (10124003) and next prime (10124039).

It can be written as a sum of positive squares in 2 ways, for example, as 5692996 + 4431025 = 2386^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 10124021 - 2⁶ = 10123957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123993 and 10124011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10520 + ... + 11441.

It is an arithmetic number, because the mean of its divisors is an integer number (2536611).

Almost surely, 2^10124021 is an apocalyptic number.

It is an amenable number.

10124021 is a deficient number, since it is larger than the sum of its proper divisors (22423).

10124021 is an equidigital number, since it uses as much as digits as its factorization.

10124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22422.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 10124021 is about 3181.8266766120. The cubic root of 10124021 is about 216.3304626679.

Adding to 10124021 its reverse (12042101), we get a palindrome (22166122).

The spelling of 10124021 in words is "ten million, one hundred twenty-four thousand, twenty-one".