140342291820 has 48 divisors (see below), whose sum is σ = 436620465120. Its totient is φ = 37424611008.

The previous prime is 140342291819. The next prime is 140342291851. The reversal of 140342291820 is 28192243041.

140342291820 is a `hidden beast` number, since 1 + 4 + 0 + 342 + 291 + 8 + 20 = 666.

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

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, 129946027 + ... + 129947106.

It is an arithmetic number, because the mean of its divisors is an integer number (9096259690).

Almost surely, 2^140342291820 is an apocalyptic number.

140342291820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140342291820 is an abundant number, since it is smaller than the sum of its proper divisors (296278173300).

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

140342291820 is a wasteful number, since it uses less digits than its factorization.

140342291820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259893151 (or 259893143 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 140342291820 in words is "one hundred forty billion, three hundred forty-two million, two hundred ninety-one thousand, eight hundred twenty".