140740987 has 4 divisors (see below), whose sum is σ = 144173736. Its totient is φ = 137308240.

The previous prime is 140740981. The next prime is 140740991. The reversal of 140740987 is 789047041.

140740987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140740987 - 2¹⁵ = 140708219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140740981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716313 + ... + 1716394.

It is an arithmetic number, because the mean of its divisors is an integer number (36043434).

Almost surely, 2^140740987 is an apocalyptic number.

140740987 is a deficient number, since it is larger than the sum of its proper divisors (3432749).

140740987 is an equidigital number, since it uses as much as digits as its factorization.

140740987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432748.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 140740987 is about 11863.4306589620. The cubic root of 140740987 is about 520.1638869522.

The spelling of 140740987 in words is "one hundred forty million, seven hundred forty thousand, nine hundred eighty-seven".