140720140 has 24 divisors (see below), whose sum is σ = 322377552. Its totient is φ = 51170880.

The previous prime is 140720119. The next prime is 140720171. The reversal of 140720140 is 41027041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319599 + ... + 320038.

It is an arithmetic number, because the mean of its divisors is an integer number (13432398).

Almost surely, 2^140720140 is an apocalyptic number.

140720140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140720140 is an abundant number, since it is smaller than the sum of its proper divisors (181657412).

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

140720140 is a wasteful number, since it uses less digits than its factorization.

140720140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639657 (or 639655 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 140720140 is about 11862.5520019935. The cubic root of 140720140 is about 520.1382029109.

Adding to 140720140 its reverse (41027041), we get a palindrome (181747181).

The spelling of 140720140 in words is "one hundred forty million, seven hundred twenty thousand, one hundred forty".