140242087 has 2 divisors, whose sum is σ = 140242088. Its totient is φ = 140242086.

The previous prime is 140242033. The next prime is 140242117. The reversal of 140242087 is 780242041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140242087 is a prime.

It is a super-2 number, since 2×140242087² = 39335685932231138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140242787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70121043 + 70121044.

It is an arithmetic number, because the mean of its divisors is an integer number (70121044).

Almost surely, 2^140242087 is an apocalyptic number.

140242087 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242087 is an equidigital number, since it uses as much as digits as its factorization.

140242087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 140242087 is about 11842.3851904927. The cubic root of 140242087 is about 519.5485319619.

The spelling of 140242087 in words is "one hundred forty million, two hundred forty-two thousand, eighty-seven".