140722891 has 2 divisors, whose sum is σ = 140722892. Its totient is φ = 140722890.

The previous prime is 140722867. The next prime is 140722909. The reversal of 140722891 is 198227041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140722891 - 2⁵ = 140722859 is a prime.

It is equal to p_7950670 and since 140722891 and 7950670 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (140722811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70361445 + 70361446.

It is an arithmetic number, because the mean of its divisors is an integer number (70361446).

Almost surely, 2^140722891 is an apocalyptic number.

140722891 is a deficient number, since it is larger than the sum of its proper divisors (1).

140722891 is an equidigital number, since it uses as much as digits as its factorization.

140722891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 140722891 is about 11862.6679545539. The cubic root of 140722891 is about 520.1415923591.

The spelling of 140722891 in words is "one hundred forty million, seven hundred twenty-two thousand, eight hundred ninety-one".