124199591438 has 32 divisors (see below), whose sum is σ = 211372156800. Its totient is φ = 54258948576.

The previous prime is 124199591429. The next prime is 124199591441. The reversal of 124199591438 is 834195991421.

It is a super-2 number, since 2×124199591438² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466433 + ... + 682611.

It is an arithmetic number, because the mean of its divisors is an integer number (6605379900).

Almost surely, 2^124199591438 is an apocalyptic number.

124199591438 is a deficient number, since it is larger than the sum of its proper divisors (87172565362).

124199591438 is a wasteful number, since it uses less digits than its factorization.

124199591438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217376.

The product of its digits is 2799360, while the sum is 56.

The spelling of 124199591438 in words is "one hundred twenty-four billion, one hundred ninety-nine million, five hundred ninety-one thousand, four hundred thirty-eight".