124121330440 has 32 divisors (see below), whose sum is σ = 279423227160. Its totient is φ = 49621824000.

The previous prime is 124121330429. The next prime is 124121330441. The reversal of 124121330440 is 44033121421.

It can be written as a sum of positive squares in 4 ways, for example, as 72892440196 + 51228890244 = 269986^2 + 226338^2 .

It is a super-2 number, since 2×124121330440² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (124121330441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759261 + ... + 908140.

Almost surely, 2^124121330440 is an apocalyptic number.

124121330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124121330440 is an abundant number, since it is smaller than the sum of its proper divisors (155301896720).

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

124121330440 is a wasteful number, since it uses less digits than its factorization.

124121330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669273 (or 1669269 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 124121330440 its reverse (44033121421), we get a palindrome (168154451861).

The spelling of 124121330440 in words is "one hundred twenty-four billion, one hundred twenty-one million, three hundred thirty thousand, four hundred forty".