10124209 has 4 divisors (see below), whose sum is σ = 10564416. Its totient is φ = 9684004.

The previous prime is 10124203. The next prime is 10124237. The reversal of 10124209 is 90242101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90242101 = 131 ⋅688871.

It is a cyclic number.

It is not a de Polignac number, because 10124209 - 2¹³ = 10116017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10124203) 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, 220069 + ... + 220114.

It is an arithmetic number, because the mean of its divisors is an integer number (2641104).

Almost surely, 2^10124209 is an apocalyptic number.

It is an amenable number.

10124209 is a deficient number, since it is larger than the sum of its proper divisors (440207).

10124209 is an equidigital number, since it uses as much as digits as its factorization.

10124209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440206.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10124209 is about 3181.8562192532. The cubic root of 10124209 is about 216.3318017233.

It can be divided in two parts, 101 and 24209, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 10124209 in words is "ten million, one hundred twenty-four thousand, two hundred nine".