140457987 has 12 divisors (see below), whose sum is σ = 211705104. Its totient is φ = 89567280.

The previous prime is 140457959. The next prime is 140457997. The reversal of 140457987 is 789754041.

It is a happy number.

It is not a de Polignac number, because 140457987 - 2⁸ = 140457731 is a prime.

It is a super-2 number, since 2×140457987² = 39456892224184338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140457997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339064 + ... + 339477.

It is an arithmetic number, because the mean of its divisors is an integer number (17642092).

Almost surely, 2^140457987 is an apocalyptic number.

140457987 is a deficient number, since it is larger than the sum of its proper divisors (71247117).

140457987 is a wasteful number, since it uses less digits than its factorization.

140457987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678570 (or 678567 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 140457987 is about 11851.4972471836. The cubic root of 140457987 is about 519.8150069272.

The spelling of 140457987 in words is "one hundred forty million, four hundred fifty-seven thousand, nine hundred eighty-seven".