140166840 has 64 divisors (see below), whose sum is σ = 458732160. Its totient is φ = 33979520.

The previous prime is 140166839. The next prime is 140166907. The reversal of 140166840 is 48661041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 140166798 and 140166807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51774 + ... + 54413.

It is an arithmetic number, because the mean of its divisors is an integer number (7167690).

Almost surely, 2^140166840 is an apocalyptic number.

140166840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140166840 is an abundant number, since it is smaller than the sum of its proper divisors (318565320).

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

140166840 is a wasteful number, since it uses less digits than its factorization.

140166840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106212 (or 106208 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 140166840 is about 11839.2077437639. The cubic root of 140166840 is about 519.4555939494.

The spelling of 140166840 in words is "one hundred forty million, one hundred sixty-six thousand, eight hundred forty".