140661120 has 128 divisors (see below), whose sum is σ = 456086880. Its totient is φ = 36864000.

The previous prime is 140661097. The next prime is 140661137. The reversal of 140661120 is 21166041.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116520 + ... + 117720.

Almost surely, 2^140661120 is an apocalyptic number.

140661120 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 140661120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228043440).

140661120 is an abundant number, since it is smaller than the sum of its proper divisors (315425760).

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

140661120 is a wasteful number, since it uses less digits than its factorization.

140661120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 140661120 is about 11860.0640807712. The cubic root of 140661120 is about 520.0654749902.

It can be divided in two parts, 1406 and 61120, that added together give a palindrome (62526).

The spelling of 140661120 in words is "one hundred forty million, six hundred sixty-one thousand, one hundred twenty".