140840278128 has 120 divisors (see below), whose sum is σ = 430379994096. Its totient is φ = 42640128000.

The previous prime is 140840278093. The next prime is 140840278157. The reversal of 140840278128 is 821872048041.

140840278128 is a `hidden beast` number, since 140 + 8 + 402 + 7 + 81 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1729528 + ... + 1809128.

Almost surely, 2^140840278128 is an apocalyptic number.

140840278128 is a gapful number since it is divisible by the number (18) 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 140840278128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215189997048).

140840278128 is an abundant number, since it is smaller than the sum of its proper divisors (289539715968).

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

140840278128 is a wasteful number, since it uses less digits than its factorization.

140840278128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80743 (or 80734 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The spelling of 140840278128 in words is "one hundred forty billion, eight hundred forty million, two hundred seventy-eight thousand, one hundred twenty-eight".