10742209 has 4 divisors (see below), whose sum is σ = 11112660. Its totient is φ = 10371760.

The previous prime is 10742203. The next prime is 10742231. The reversal of 10742209 is 90224701.

10742209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90224701 = 7 ⋅12889243.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 7756225 = 1728^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 10742209 - 2⁹ = 10741697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10742203) 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, 185182 + ... + 185239.

It is an arithmetic number, because the mean of its divisors is an integer number (2778165).

Almost surely, 2^10742209 is an apocalyptic number.

It is an amenable number.

10742209 is a deficient number, since it is larger than the sum of its proper divisors (370451).

10742209 is an equidigital number, since it uses as much as digits as its factorization.

10742209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370450.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 10742209 is about 3277.5309304414. The cubic root of 10742209 is about 220.6469181626.

The spelling of 10742209 in words is "ten million, seven hundred forty-two thousand, two hundred nine".