124144440402 has 32 divisors (see below), whose sum is σ = 255070418112. Its totient is φ = 40251847104.

The previous prime is 124144440401. The next prime is 124144440443. The reversal of 124144440402 is 204044441421.

It is a self number, because there is not a number n which added to its sum of digits gives 124144440402.

It is not an unprimeable number, because it can be changed into a prime (124144440401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740253 + ... + 892335.

It is an arithmetic number, because the mean of its divisors is an integer number (7970950566).

Almost surely, 2^124144440402 is an apocalyptic number.

124144440402 is an abundant number, since it is smaller than the sum of its proper divisors (130925977710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124144440402 is a wasteful number, since it uses less digits than its factorization.

124144440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155802.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 124144440402 its reverse (204044441421), we get a palindrome (328188881823).

The spelling of 124144440402 in words is "one hundred twenty-four billion, one hundred forty-four million, four hundred forty thousand, four hundred two".