124343221440 has 112 divisors (see below), whose sum is σ = 395168567040. Its totient is φ = 33126374400.

The previous prime is 124343221427. The next prime is 124343221477. The reversal of 124343221440 is 44122343421.

It is a super-2 number, since 2×124343221440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 124343221398 and 124343221407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947341 + ... + 1070579.

Almost surely, 2^124343221440 is an apocalyptic number.

124343221440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124343221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197584283520).

124343221440 is an abundant number, since it is smaller than the sum of its proper divisors (270825345600).

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

124343221440 is a wasteful number, since it uses less digits than its factorization.

124343221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124310 (or 124300 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 124343221440 its reverse (44122343421), we get a palindrome (168465564861).

The spelling of 124343221440 in words is "one hundred twenty-four billion, three hundred forty-three million, two hundred twenty-one thousand, four hundred forty".