140342908878 has 16 divisors (see below), whose sum is σ = 311873130960. Its totient is φ = 46780969608.

The previous prime is 140342908877. The next prime is 140342908921. The reversal of 140342908878 is 878809243041.

It is a happy number.

140342908878 is a `hidden beast` number, since 1 + 403 + 4 + 2 + 90 + 88 + 78 = 666.

It is a super-4 number, since 4×140342908878⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2598942757 = 140342908878 / (1 + 4 + 0 + 3 + 4 + 2 + 9 + 0 + 8 + 8 + 7 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140342908877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1299471325 + ... + 1299471432.

It is an arithmetic number, because the mean of its divisors is an integer number (19492070685).

Almost surely, 2^140342908878 is an apocalyptic number.

140342908878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

140342908878 is an abundant number, since it is smaller than the sum of its proper divisors (171530222082).

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

140342908878 is a wasteful number, since it uses less digits than its factorization.

140342908878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598942768 (or 2598942762 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 140342908878 in words is "one hundred forty billion, three hundred forty-two million, nine hundred eight thousand, eight hundred seventy-eight".