140156440 has 16 divisors (see below), whose sum is σ = 315352080. Its totient is φ = 56062560.

The previous prime is 140156437. The next prime is 140156461. The reversal of 140156440 is 44651041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1751916 + ... + 1751995.

It is an arithmetic number, because the mean of its divisors is an integer number (19709505).

Almost surely, 2^140156440 is an apocalyptic number.

140156440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140156440 is an abundant number, since it is smaller than the sum of its proper divisors (175195640).

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

140156440 is a wasteful number, since it uses less digits than its factorization.

140156440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503922 (or 3503918 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 140156440 is about 11838.7685170376. The cubic root of 140156440 is about 519.4427462321.

The spelling of 140156440 in words is "one hundred forty million, one hundred fifty-six thousand, four hundred forty".