140143520 has 48 divisors (see below), whose sum is σ = 361192608. Its totient is φ = 50960640.

The previous prime is 140143499. The next prime is 140143537. The reversal of 140143520 is 25341041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 140143492 and 140143501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38054 + ... + 41573.

It is an arithmetic number, because the mean of its divisors is an integer number (7524846).

Almost surely, 2^140143520 is an apocalyptic number.

140143520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140143520 is an abundant number, since it is smaller than the sum of its proper divisors (221049088).

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

140143520 is a wasteful number, since it uses less digits than its factorization.

140143520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79653 (or 79645 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140143520 is about 11838.2228395989. Note that the first 3 decimals coincide. The cubic root of 140143520 is about 519.4267845289.

Adding to 140143520 its reverse (25341041), we get a palindrome (165484561).

The spelling of 140143520 in words is "one hundred forty million, one hundred forty-three thousand, five hundred twenty".