140541691 has 2 divisors, whose sum is σ = 140541692. Its totient is φ = 140541690.

The previous prime is 140541619. The next prime is 140541701. The reversal of 140541691 is 196145041.

Together with previous prime (140541619) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140541691 - 2¹³ = 140533499 is a prime.

It is not a weakly prime, because it can be changed into another prime (140541391) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70270845 + 70270846.

It is an arithmetic number, because the mean of its divisors is an integer number (70270846).

Almost surely, 2^140541691 is an apocalyptic number.

140541691 is a deficient number, since it is larger than the sum of its proper divisors (1).

140541691 is an equidigital number, since it uses as much as digits as its factorization.

140541691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 140541691 is about 11855.0280893805. The cubic root of 140541691 is about 519.9182452832.

The spelling of 140541691 in words is "one hundred forty million, five hundred forty-one thousand, six hundred ninety-one".