42637097 has 2 divisors, whose sum is σ = 42637098. Its totient is φ = 42637096.

The previous prime is 42637093. The next prime is 42637129. The reversal of 42637097 is 79073624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 3936256 = 6221^2 + 1984^2 .

It is a cyclic number.

It is not a de Polignac number, because 42637097 - 2² = 42637093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42637097.

It is not a weakly prime, because it can be changed into another prime (42637093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21318548 + 21318549.

It is an arithmetic number, because the mean of its divisors is an integer number (21318549).

Almost surely, 2^42637097 is an apocalyptic number.

It is an amenable number.

42637097 is a deficient number, since it is larger than the sum of its proper divisors (1).

42637097 is an equidigital number, since it uses as much as digits as its factorization.

42637097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 42637097 is about 6529.7087990201. The cubic root of 42637097 is about 349.3514438543.

The spelling of 42637097 in words is "forty-two million, six hundred thirty-seven thousand, ninety-seven".