140640120 has 96 divisors (see below), whose sum is σ = 459360720. Its totient is φ = 37317120.

The previous prime is 140640113. The next prime is 140640131. The reversal of 140640120 is 21046041.

140640120 is a `hidden beast` number, since 1 + 4 + 0 + 640 + 1 + 20 = 666.

It is a super-2 number, since 2×140640120² = 39559286707228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 140640093 and 140640102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80860 + ... + 82580.

Almost surely, 2^140640120 is an apocalyptic number.

140640120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140640120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229680360).

140640120 is an abundant number, since it is smaller than the sum of its proper divisors (318720600).

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

140640120 is a wasteful number, since it uses less digits than its factorization.

140640120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1958 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140640120 is about 11859.1787236722. The cubic root of 140640120 is about 520.0395926461.

Adding to 140640120 its reverse (21046041), we get a palindrome (161686161).

The spelling of 140640120 in words is "one hundred forty million, six hundred forty thousand, one hundred twenty".