140232987 has 6 divisors (see below), whose sum is σ = 202558772. Its totient is φ = 93488652.

The previous prime is 140232941. The next prime is 140232991. The reversal of 140232987 is 789232041.

140232987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140232987 - 2⁸ = 140232731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140232187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7790713 + ... + 7790730.

Almost surely, 2^140232987 is an apocalyptic number.

140232987 is a deficient number, since it is larger than the sum of its proper divisors (62325785).

140232987 is a wasteful number, since it uses less digits than its factorization.

140232987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15581449 (or 15581446 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 140232987 is about 11842.0009711197. Note that the first 3 decimals coincide. The cubic root of 140232987 is about 519.5372942657.

The spelling of 140232987 in words is "one hundred forty million, two hundred thirty-two thousand, nine hundred eighty-seven".