124032409 has 4 divisors (see below), whose sum is σ = 124066404. Its totient is φ = 123998416.

The previous prime is 124032401. The next prime is 124032413. The reversal of 124032409 is 904230421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25725184 + 98307225 = 5072^2 + 9915^2 .

It is a cyclic number.

It is not a de Polignac number, because 124032409 - 2³ = 124032401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124032401) 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, 10762 + ... + 19075.

It is an arithmetic number, because the mean of its divisors is an integer number (31016601).

Almost surely, 2^124032409 is an apocalyptic number.

It is an amenable number.

124032409 is a deficient number, since it is larger than the sum of its proper divisors (33995).

124032409 is an equidigital number, since it uses as much as digits as its factorization.

124032409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33994.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 124032409 is about 11136.9838376465. The cubic root of 124032409 is about 498.7065354510.

The spelling of 124032409 in words is "one hundred twenty-four million, thirty-two thousand, four hundred nine".