1240323907 has 2 divisors, whose sum is σ = 1240323908. Its totient is φ = 1240323906.

The previous prime is 1240323871. The next prime is 1240323941. The reversal of 1240323907 is 7093230421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240323907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1240323977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620161953 + 620161954.

It is an arithmetic number, because the mean of its divisors is an integer number (620161954).

Almost surely, 2^1240323907 is an apocalyptic number.

1240323907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240323907 is an equidigital number, since it uses as much as digits as its factorization.

1240323907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1240323907 is about 35218.2325933599. The cubic root of 1240323907 is about 1074.4306072799.

The spelling of 1240323907 in words is "one billion, two hundred forty million, three hundred twenty-three thousand, nine hundred seven".