42312097 has 2 divisors, whose sum is σ = 42312098. Its totient is φ = 42312096.

The previous prime is 42312077. The next prime is 42312103. The reversal of 42312097 is 79021324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41165056 + 1147041 = 6416^2 + 1071^2 .

It is a cyclic number.

It is not a de Polignac number, because 42312097 - 2²³ = 33923489 is a prime.

It is not a weakly prime, because it can be changed into another prime (42312037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21156048 + 21156049.

It is an arithmetic number, because the mean of its divisors is an integer number (21156049).

Almost surely, 2^42312097 is an apocalyptic number.

It is an amenable number.

42312097 is a deficient number, since it is larger than the sum of its proper divisors (1).

42312097 is an equidigital number, since it uses as much as digits as its factorization.

42312097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 42312097 is about 6504.7749384587. The cubic root of 42312097 is about 348.4615385977.

It can be divided in two parts, 4231 and 2097, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 42312097 in words is "forty-two million, three hundred twelve thousand, ninety-seven".