124436421640 has 16 divisors (see below), whose sum is σ = 279981948780. Its totient is φ = 49774568640.

The previous prime is 124436421611. The next prime is 124436421671. The reversal of 124436421640 is 46124634421.

It can be written as a sum of positive squares in 2 ways, for example, as 103863109284 + 20573312356 = 322278^2 + 143434^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 124436421640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555455231 + ... + 1555455310.

Almost surely, 2^124436421640 is an apocalyptic number.

124436421640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124436421640 is an abundant number, since it is smaller than the sum of its proper divisors (155545527140).

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

124436421640 is a wasteful number, since it uses less digits than its factorization.

124436421640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110910552 (or 3110910548 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 124436421640 in words is "one hundred twenty-four billion, four hundred thirty-six million, four hundred twenty-one thousand, six hundred forty".