124542979 has 4 divisors (see below), whose sum is σ = 135865080. Its totient is φ = 113220880.

The previous prime is 124542973. The next prime is 124543019. The reversal of 124542979 is 979245421.

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

It is a cyclic number.

It is not a de Polignac number, because 124542979 - 2¹¹ = 124540931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124542973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5661034 + ... + 5661055.

It is an arithmetic number, because the mean of its divisors is an integer number (33966270).

Almost surely, 2^124542979 is an apocalyptic number.

124542979 is a deficient number, since it is larger than the sum of its proper divisors (11322101).

124542979 is a wasteful number, since it uses less digits than its factorization.

124542979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322100.

The product of its digits is 181440, while the sum is 43.

The square root of 124542979 is about 11159.8825710668. The cubic root of 124542979 is about 499.3898945121.

It can be divided in two parts, 124542 and 979, that added together give a palindrome (125521).

The spelling of 124542979 in words is "one hundred twenty-four million, five hundred forty-two thousand, nine hundred seventy-nine".