140187381 has 8 divisors (see below), whose sum is σ = 187119744. Its totient is φ = 93356640.

The previous prime is 140187373. The next prime is 140187427. The reversal of 140187381 is 183781041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140187381 - 2³ = 140187373 is a prime.

It is a super-2 number, since 2×140187381² = 39305003583278322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140187781) 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, 22125 + ... + 27746.

It is an arithmetic number, because the mean of its divisors is an integer number (23389968).

Almost surely, 2^140187381 is an apocalyptic number.

It is an amenable number.

140187381 is a deficient number, since it is larger than the sum of its proper divisors (46932363).

140187381 is an equidigital number, since it uses as much as digits as its factorization.

140187381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50811.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 140187381 is about 11840.0752109098. The cubic root of 140187381 is about 519.4809675593.

The spelling of 140187381 in words is "one hundred forty million, one hundred eighty-seven thousand, three hundred eighty-one".