124887091 has 4 divisors (see below), whose sum is σ = 142728112. Its totient is φ = 107046072.

The previous prime is 124887073. The next prime is 124887149. The reversal of 124887091 is 190788421.

It is a happy number.

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

It is not a de Polignac number, because 124887091 - 2⁹ = 124886579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124887041) 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, 8920500 + ... + 8920513.

It is an arithmetic number, because the mean of its divisors is an integer number (35682028).

Almost surely, 2^124887091 is an apocalyptic number.

124887091 is a deficient number, since it is larger than the sum of its proper divisors (17841021).

124887091 is an equidigital number, since it uses as much as digits as its factorization.

124887091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17841020.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 124887091 is about 11175.2893027429. The cubic root of 124887091 is about 499.8494093161.

The spelling of 124887091 in words is "one hundred twenty-four million, eight hundred eighty-seven thousand, ninety-one".