140281087 has 2 divisors, whose sum is σ = 140281088. Its totient is φ = 140281086.

The previous prime is 140281073. The next prime is 140281111. The reversal of 140281087 is 780182041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140281087 - 2²³ = 131892479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140281187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70140543 + 70140544.

It is an arithmetic number, because the mean of its divisors is an integer number (70140544).

Almost surely, 2^140281087 is an apocalyptic number.

140281087 is a deficient number, since it is larger than the sum of its proper divisors (1).

140281087 is an equidigital number, since it uses as much as digits as its factorization.

140281087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 140281087 is about 11844.0317037738. The cubic root of 140281087 is about 519.5966880117.

The spelling of 140281087 in words is "one hundred forty million, two hundred eighty-one thousand, eighty-seven".