140232440 has 64 divisors (see below), whose sum is σ = 322695360. Its totient is φ = 54835200.

The previous prime is 140232431. The next prime is 140232457. The reversal of 140232440 is 44232041.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415952 + ... + 416288.

It is an arithmetic number, because the mean of its divisors is an integer number (5042115).

Almost surely, 2^140232440 is an apocalyptic number.

140232440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140232440 is an abundant number, since it is smaller than the sum of its proper divisors (182462920).

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

140232440 is a wasteful number, since it uses less digits than its factorization.

140232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140232440 is about 11841.9778753382. The cubic root of 140232440 is about 519.5366187536.

Adding to 140232440 its reverse (44232041), we get a palindrome (184464481).

The spelling of 140232440 in words is "one hundred forty million, two hundred thirty-two thousand, four hundred forty".