140724497 has 2 divisors, whose sum is σ = 140724498. Its totient is φ = 140724496.

The previous prime is 140724491. The next prime is 140724527. The reversal of 140724497 is 794427041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121793296 + 18931201 = 11036^2 + 4351^2 .

It is a cyclic number.

It is not a de Polignac number, because 140724497 - 2⁴ = 140724481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140724497.

It is not a weakly prime, because it can be changed into another prime (140724491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70362248 + 70362249.

It is an arithmetic number, because the mean of its divisors is an integer number (70362249).

Almost surely, 2^140724497 is an apocalyptic number.

It is an amenable number.

140724497 is a deficient number, since it is larger than the sum of its proper divisors (1).

140724497 is an equidigital number, since it uses as much as digits as its factorization.

140724497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 140724497 is about 11862.7356457101. The cubic root of 140724497 is about 520.1435710568.

The spelling of 140724497 in words is "one hundred forty million, seven hundred twenty-four thousand, four hundred ninety-seven".