140785097 has 2 divisors, whose sum is σ = 140785098. Its totient is φ = 140785096.

The previous prime is 140785067. The next prime is 140785123. The reversal of 140785097 is 790587041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139806976 + 978121 = 11824^2 + 989^2 .

It is an emirp because it is prime and its reverse (790587041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140785097 - 2²² = 136590793 is a prime.

It is equal to p_7953962 and since 140785097 and 7953962 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 (140785067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70392548 + 70392549.

It is an arithmetic number, because the mean of its divisors is an integer number (70392549).

Almost surely, 2^140785097 is an apocalyptic number.

It is an amenable number.

140785097 is a deficient number, since it is larger than the sum of its proper divisors (1).

140785097 is an equidigital number, since it uses as much as digits as its factorization.

140785097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 140785097 is about 11865.2895877008. The cubic root of 140785097 is about 520.2182232498.

The spelling of 140785097 in words is "one hundred forty million, seven hundred eighty-five thousand, ninety-seven".