140342440 has 32 divisors (see below), whose sum is σ = 360881280. Its totient is φ = 48117312.

The previous prime is 140342437. The next prime is 140342479. The reversal of 140342440 is 44243041.

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, 250332 + ... + 250891.

It is an arithmetic number, because the mean of its divisors is an integer number (11277540).

Almost surely, 2^140342440 is an apocalyptic number.

140342440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140342440 is an abundant number, since it is smaller than the sum of its proper divisors (220538840).

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

140342440 is a wasteful number, since it uses less digits than its factorization.

140342440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501241 (or 501237 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 140342440 is about 11846.6214593022. The cubic root of 140342440 is about 519.6724268252.

Adding to 140342440 its reverse (44243041), we get a palindrome (184585481).

The spelling of 140342440 in words is "one hundred forty million, three hundred forty-two thousand, four hundred forty".