124221242140 has 24 divisors (see below), whose sum is σ = 260890202160. Its totient is φ = 49683621888.

The previous prime is 124221242137. The next prime is 124221242141. The reversal of 124221242140 is 41242122421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124221242141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92122 + ... + 506881.

It is an arithmetic number, because the mean of its divisors is an integer number (10870425090).

Almost surely, 2^124221242140 is an apocalyptic number.

124221242140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124221242140 is an abundant number, since it is smaller than the sum of its proper divisors (136668960020).

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

124221242140 is a wasteful number, since it uses less digits than its factorization.

124221242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609381 (or 609379 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 124221242140 its reverse (41242122421), we get a palindrome (165463364561).

The spelling of 124221242140 in words is "one hundred twenty-four billion, two hundred twenty-one million, two hundred forty-two thousand, one hundred forty".