140245361 has 2 divisors, whose sum is σ = 140245362. Its totient is φ = 140245360.

The previous prime is 140245331. The next prime is 140245381. The reversal of 140245361 is 163542041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 414736 = 11825^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 140245361 - 2¹⁰ = 140244337 is a prime.

It is a super-2 number, since 2×140245361² = 39337522564040642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140245361.

It is not a weakly prime, because it can be changed into another prime (140245331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122680 + 70122681.

It is an arithmetic number, because the mean of its divisors is an integer number (70122681).

Almost surely, 2^140245361 is an apocalyptic number.

It is an amenable number.

140245361 is a deficient number, since it is larger than the sum of its proper divisors (1).

140245361 is an equidigital number, since it uses as much as digits as its factorization.

140245361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 140245361 is about 11842.5234219739. The cubic root of 140245361 is about 519.5525749438.

The spelling of 140245361 in words is "one hundred forty million, two hundred forty-five thousand, three hundred sixty-one".