140161140 has 144 divisors (see below), whose sum is σ = 489460608. Its totient is φ = 31802112.

The previous prime is 140161111. The next prime is 140161183. The reversal of 140161140 is 41161041.

140161140 is a `hidden beast` number, since 14 + 0 + 1 + 611 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217659 + ... + 218301.

It is an arithmetic number, because the mean of its divisors is an integer number (3399032).

Almost surely, 2^140161140 is an apocalyptic number.

140161140 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 140161140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244730304).

140161140 is an abundant number, since it is smaller than the sum of its proper divisors (349299468).

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

140161140 is a wasteful number, since it uses less digits than its factorization.

140161140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 140161140 is about 11838.9670157493. The cubic root of 140161140 is about 519.4485524908.

Subtracting from 140161140 its reverse (41161041), we obtain a palindrome (99000099).

The spelling of 140161140 in words is "one hundred forty million, one hundred sixty-one thousand, one hundred forty".