140401087 has 2 divisors, whose sum is σ = 140401088. Its totient is φ = 140401086.

The previous prime is 140401073. The next prime is 140401123. The reversal of 140401087 is 780104041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140401087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140401787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70200543 + 70200544.

It is an arithmetic number, because the mean of its divisors is an integer number (70200544).

Almost surely, 2^140401087 is an apocalyptic number.

140401087 is a deficient number, since it is larger than the sum of its proper divisors (1).

140401087 is an equidigital number, since it uses as much as digits as its factorization.

140401087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 140401087 is about 11849.0964634440. The cubic root of 140401087 is about 519.7448045143.

The spelling of 140401087 in words is "one hundred forty million, four hundred one thousand, eighty-seven".