140560457 has 2 divisors, whose sum is σ = 140560458. Its totient is φ = 140560456.

The previous prime is 140560397. The next prime is 140560463. The reversal of 140560457 is 754065041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109077136 + 31483321 = 10444^2 + 5611^2 .

It is an emirp because it is prime and its reverse (754065041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140560457 - 2¹⁴ = 140544073 is a prime.

It is not a weakly prime, because it can be changed into another prime (140560757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70280228 + 70280229.

It is an arithmetic number, because the mean of its divisors is an integer number (70280229).

Almost surely, 2^140560457 is an apocalyptic number.

It is an amenable number.

140560457 is a deficient number, since it is larger than the sum of its proper divisors (1).

140560457 is an equidigital number, since it uses as much as digits as its factorization.

140560457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 140560457 is about 11855.8195414741. The cubic root of 140560457 is about 519.9413851584.

The spelling of 140560457 in words is "one hundred forty million, five hundred sixty thousand, four hundred fifty-seven".