140712891 has 8 divisors (see below), whose sum is σ = 204673344. Its totient is φ = 85280520.

The previous prime is 140712881. The next prime is 140712941. The reversal of 140712891 is 198217041.

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

It is not a de Polignac number, because 140712891 - 2²⁵ = 107158459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 4264027 = 140712891 / (1 + 4 + 0 + 7 + 1 + 2 + 8 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (140712821) 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, 2131981 + ... + 2132046.

It is an arithmetic number, because the mean of its divisors is an integer number (25584168).

Almost surely, 2^140712891 is an apocalyptic number.

140712891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140712891 is a deficient number, since it is larger than the sum of its proper divisors (63960453).

140712891 is a wasteful number, since it uses less digits than its factorization.

140712891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264041.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 140712891 is about 11862.2464567214. The cubic root of 140712891 is about 520.1292713616.

The spelling of 140712891 in words is "one hundred forty million, seven hundred twelve thousand, eight hundred ninety-one".