140166390 has 64 divisors (see below), whose sum is σ = 414038016. Its totient is φ = 29572992.

The previous prime is 140166379. The next prime is 140166391. The reversal of 140166390 is 93661041.

140166390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140166391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22942 + ... + 28401.

It is an arithmetic number, because the mean of its divisors is an integer number (6469344).

Almost surely, 2^140166390 is an apocalyptic number.

140166390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140166390 is an abundant number, since it is smaller than the sum of its proper divisors (273871626).

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

140166390 is a wasteful number, since it uses less digits than its factorization.

140166390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51373.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 140166390 is about 11839.1887390986. The cubic root of 140166390 is about 519.4550380517.

The spelling of 140166390 in words is "one hundred forty million, one hundred sixty-six thousand, three hundred ninety".