140105587 has 2 divisors, whose sum is σ = 140105588. Its totient is φ = 140105586.

The previous prime is 140105579. The next prime is 140105599. The reversal of 140105587 is 785501041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140105587 - 2³ = 140105579 is a prime.

It is a super-2 number, since 2×140105587² = 39259151017229138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140105557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70052793 + 70052794.

It is an arithmetic number, because the mean of its divisors is an integer number (70052794).

Almost surely, 2^140105587 is an apocalyptic number.

140105587 is a deficient number, since it is larger than the sum of its proper divisors (1).

140105587 is an equidigital number, since it uses as much as digits as its factorization.

140105587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 140105587 is about 11836.6205903543. The cubic root of 140105587 is about 519.3799154473.

The spelling of 140105587 in words is "one hundred forty million, one hundred five thousand, five hundred eighty-seven".