124142405440 has 28 divisors (see below), whose sum is σ = 295614103716. Its totient is φ = 49656962048.

The previous prime is 124142405377. The next prime is 124142405473. The reversal of 124142405440 is 44504241421.

It can be written as a sum of positive squares in 2 ways, for example, as 29741071936 + 94401333504 = 172456^2 + 307248^2 .

It is a super-2 number, since 2×124142405440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193972189 + ... + 193972828.

Almost surely, 2^124142405440 is an apocalyptic number.

124142405440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124142405440 is an abundant number, since it is smaller than the sum of its proper divisors (171471698276).

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

124142405440 is an equidigital number, since it uses as much as digits as its factorization.

124142405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387945034 (or 387945024 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 124142405440 its reverse (44504241421), we get a palindrome (168646646861).

The spelling of 124142405440 in words is "one hundred twenty-four billion, one hundred forty-two million, four hundred five thousand, four hundred forty".