140144140 has 24 divisors (see below), whose sum is σ = 296115120. Its totient is φ = 55712448.

The previous prime is 140144111. The next prime is 140144143. The reversal of 140144140 is 41441041.

It is not an unprimeable number, because it can be changed into a prime (140144143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18235 + ... + 24754.

It is an arithmetic number, because the mean of its divisors is an integer number (12338130).

Almost surely, 2^140144140 is an apocalyptic number.

140144140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140144140 is an abundant number, since it is smaller than the sum of its proper divisors (155970980).

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

140144140 is a wasteful number, since it uses less digits than its factorization.

140144140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43161 (or 43159 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 140144140 is about 11838.2490259328. The cubic root of 140144140 is about 519.4275505154.

Adding to 140144140 its reverse (41441041), we get a palindrome (181585181).

The spelling of 140144140 in words is "one hundred forty million, one hundred forty-four thousand, one hundred forty".