140999656 has 96 divisors (see below), whose sum is σ = 326350080. Its totient is φ = 56851200.

The previous prime is 140999647. The next prime is 140999657. The reversal of 140999656 is 656999041.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140999657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498091 + ... + 498373.

It is an arithmetic number, because the mean of its divisors is an integer number (3399480).

Almost surely, 2^140999656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140999656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163175040).

140999656 is an abundant number, since it is smaller than the sum of its proper divisors (185350424).

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

140999656 is a wasteful number, since it uses less digits than its factorization.

140999656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 140999656 is about 11874.3276020160. The cubic root of 140999656 is about 520.4823630623.

The spelling of 140999656 in words is "one hundred forty million, nine hundred ninety-nine thousand, six hundred fifty-six".