140975640 has 160 divisors (see below), whose sum is σ = 510436080. Its totient is φ = 34691328.

The previous prime is 140975633. The next prime is 140975657. The reversal of 140975640 is 46579041.

140975640 is a `hidden beast` number, since 1 + 4 + 0 + 9 + 7 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 140975595 and 140975604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40447 + ... + 43793.

Almost surely, 2^140975640 is an apocalyptic number.

140975640 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 140975640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255218040).

140975640 is an abundant number, since it is smaller than the sum of its proper divisors (369460440).

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

140975640 is a wasteful number, since it uses less digits than its factorization.

140975640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 140975640 is about 11873.3163016909. The cubic root of 140975640 is about 520.4528107108.

The spelling of 140975640 in words is "one hundred forty million, nine hundred seventy-five thousand, six hundred forty".