140002487 has 4 divisors (see below), whose sum is σ = 143786376. Its totient is φ = 136218600.

The previous prime is 140002483. The next prime is 140002501. The reversal of 140002487 is 784200041.

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 140002487 - 2² = 140002483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140002483) 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, 1891889 + ... + 1891962.

It is an arithmetic number, because the mean of its divisors is an integer number (35946594).

Almost surely, 2^140002487 is an apocalyptic number.

140002487 is a deficient number, since it is larger than the sum of its proper divisors (3783889).

140002487 is an equidigital number, since it uses as much as digits as its factorization.

140002487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783888.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 140002487 is about 11832.2646606641. The cubic root of 140002487 is about 519.2524848652.

The spelling of 140002487 in words is "one hundred forty million, two thousand, four hundred eighty-seven".