1240697167 has 2 divisors, whose sum is σ = 1240697168. Its totient is φ = 1240697166.

The previous prime is 1240697083. The next prime is 1240697177. The reversal of 1240697167 is 7617960421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1240697167 - 2¹¹ = 1240695119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240697177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620348583 + 620348584.

It is an arithmetic number, because the mean of its divisors is an integer number (620348584).

Almost surely, 2^1240697167 is an apocalyptic number.

1240697167 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240697167 is an equidigital number, since it uses as much as digits as its factorization.

1240697167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1240697167 is about 35223.5314385142. The cubic root of 1240697167 is about 1074.5383752975.

The spelling of 1240697167 in words is "one billion, two hundred forty million, six hundred ninety-seven thousand, one hundred sixty-seven".