124420747 has 4 divisors (see below), whose sum is σ = 135731736. Its totient is φ = 113109760.

The previous prime is 124420741. The next prime is 124420753. The reversal of 124420747 is 747024421.

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 (124420741) and next prime (124420753).

It is a cyclic number.

It is not a de Polignac number, because 124420747 - 2⁷ = 124420619 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124420741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5655478 + ... + 5655499.

It is an arithmetic number, because the mean of its divisors is an integer number (33932934).

Almost surely, 2^124420747 is an apocalyptic number.

124420747 is a deficient number, since it is larger than the sum of its proper divisors (11310989).

124420747 is a wasteful number, since it uses less digits than its factorization.

124420747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11310988.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 124420747 is about 11154.4048250007. The cubic root of 124420747 is about 499.2264665759.

The spelling of 124420747 in words is "one hundred twenty-four million, four hundred twenty thousand, seven hundred forty-seven".