140024540 has 24 divisors (see below), whose sum is σ = 295701840. Its totient is φ = 55695488.

The previous prime is 140024519. The next prime is 140024611. The reversal of 140024540 is 45420041.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15977 + ... + 23136.

It is an arithmetic number, because the mean of its divisors is an integer number (12320910).

Almost surely, 2^140024540 is an apocalyptic number.

140024540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140024540 is an abundant number, since it is smaller than the sum of its proper divisors (155677300).

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

140024540 is a wasteful number, since it uses less digits than its factorization.

140024540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301 (or 39299 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 140024540 is about 11833.1965250308. The cubic root of 140024540 is about 519.2797474139.

Adding to 140024540 its reverse (45420041), we get a palindrome (185444581).

The spelling of 140024540 in words is "one hundred forty million, twenty-four thousand, five hundred forty".