140661136 has 160 divisors (see below), whose sum is σ = 365690880. Its totient is φ = 50803200.

The previous prime is 140661097. The next prime is 140661137. The reversal of 140661136 is 631166041.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (140661137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107505 + ... + 1107631.

It is an arithmetic number, because the mean of its divisors is an integer number (2285568).

Almost surely, 2^140661136 is an apocalyptic number.

140661136 is a gapful number since it is divisible by the number (16) 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 140661136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182845440).

140661136 is an abundant number, since it is smaller than the sum of its proper divisors (225029744).

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

140661136 is a wasteful number, since it uses less digits than its factorization.

140661136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 140661136 is about 11860.0647553038. The cubic root of 140661136 is about 520.0654947091.

The spelling of 140661136 in words is "one hundred forty million, six hundred sixty-one thousand, one hundred thirty-six".