140513520 has 80 divisors (see below), whose sum is σ = 497825280. Its totient is φ = 32116992.

The previous prime is 140513507. The next prime is 140513533. The reversal of 140513520 is 25315041.

It is an interprime number because it is at equal distance from previous prime (140513507) and next prime (140513533).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 40140 + ... + 43499.

It is an arithmetic number, because the mean of its divisors is an integer number (6222816).

Almost surely, 2^140513520 is an apocalyptic number.

140513520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140513520 is an abundant number, since it is smaller than the sum of its proper divisors (357311760).

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

140513520 is a wasteful number, since it uses less digits than its factorization.

140513520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83662 (or 83656 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 140513520 is about 11853.8398841894. The cubic root of 140513520 is about 519.8835044755.

Adding to 140513520 its reverse (25315041), we get a palindrome (165828561).

It can be divided in two parts, 14051 and 3520, that added together give a palindrome (17571).

The spelling of 140513520 in words is "one hundred forty million, five hundred thirteen thousand, five hundred twenty".