140030291 has 2 divisors, whose sum is σ = 140030292. Its totient is φ = 140030290.

The previous prime is 140030281. The next prime is 140030321. The reversal of 140030291 is 192030041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140030291 - 2⁶ = 140030227 is a prime.

It is not a weakly prime, because it can be changed into another prime (140030221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70015145 + 70015146.

It is an arithmetic number, because the mean of its divisors is an integer number (70015146).

Almost surely, 2^140030291 is an apocalyptic number.

140030291 is a deficient number, since it is larger than the sum of its proper divisors (1).

140030291 is an equidigital number, since it uses as much as digits as its factorization.

140030291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 140030291 is about 11833.4395253451. The cubic root of 140030291 is about 519.2868564938.

The spelling of 140030291 in words is "one hundred forty million, thirty thousand, two hundred ninety-one".