124428506 has 4 divisors (see below), whose sum is σ = 186642762. Its totient is φ = 62214252.

The previous prime is 124428503. The next prime is 124428509. The reversal of 124428506 is 605824421.

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

It is an interprime number because it is at equal distance from previous prime (124428503) and next prime (124428509).

It can be written as a sum of positive squares in only one way, i.e., 73805281 + 50623225 = 8591^2 + 7115^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124428503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31107125 + ... + 31107128.

Almost surely, 2^124428506 is an apocalyptic number.

124428506 is a deficient number, since it is larger than the sum of its proper divisors (62214256).

124428506 is an equidigital number, since it uses as much as digits as its factorization.

124428506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62214255.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 124428506 is about 11154.7526193995. The cubic root of 124428506 is about 499.2368437778.

The spelling of 124428506 in words is "one hundred twenty-four million, four hundred twenty-eight thousand, five hundred six".