140424440520 has 128 divisors (see below), whose sum is σ = 518490282240. Its totient is φ = 29628011520.

The previous prime is 140424440503. The next prime is 140424440521. The reversal of 140424440520 is 25044424041.

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

It is not an unprimeable number, because it can be changed into a prime (140424440521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6418771 + ... + 6440610.

It is an arithmetic number, because the mean of its divisors is an integer number (4050705330).

Almost surely, 2^140424440520 is an apocalyptic number.

140424440520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140424440520 is an abundant number, since it is smaller than the sum of its proper divisors (378065841720).

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

140424440520 is a wasteful number, since it uses less digits than its factorization.

140424440520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12859415 (or 12859411 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 140424440520 its reverse (25044424041), we get a palindrome (165468864561).

The spelling of 140424440520 in words is "one hundred forty billion, four hundred twenty-four million, four hundred forty thousand, five hundred twenty".