42938297 has 2 divisors, whose sum is σ = 42938298. Its totient is φ = 42938296.

The previous prime is 42938281. The next prime is 42938323. The reversal of 42938297 is 79283924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42758521 + 179776 = 6539^2 + 424^2 .

It is a cyclic number.

It is not a de Polignac number, because 42938297 - 2⁴ = 42938281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42938227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21469148 + 21469149.

It is an arithmetic number, because the mean of its divisors is an integer number (21469149).

Almost surely, 2^42938297 is an apocalyptic number.

It is an amenable number.

42938297 is a deficient number, since it is larger than the sum of its proper divisors (1).

42938297 is an equidigital number, since it uses as much as digits as its factorization.

42938297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 42938297 is about 6552.7320256516. The cubic root of 42938297 is about 350.1721520456.

Adding to 42938297 its reverse (79283924), we get a palindrome (122222221).

The spelling of 42938297 in words is "forty-two million, nine hundred thirty-eight thousand, two hundred ninety-seven".