42507233 has 2 divisors, whose sum is σ = 42507234. Its totient is φ = 42507232.

The previous prime is 42507211. The next prime is 42507239. The reversal of 42507233 is 33270524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34845409 + 7661824 = 5903^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 42507233 - 2¹⁴ = 42490849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42507239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21253616 + 21253617.

It is an arithmetic number, because the mean of its divisors is an integer number (21253617).

Almost surely, 2^42507233 is an apocalyptic number.

It is an amenable number.

42507233 is a deficient number, since it is larger than the sum of its proper divisors (1).

42507233 is an equidigital number, since it uses as much as digits as its factorization.

42507233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 42507233 is about 6519.7571273783. The cubic root of 42507233 is about 348.9963984598.

Adding to 42507233 its reverse (33270524), we get a palindrome (75777757).

The spelling of 42507233 in words is "forty-two million, five hundred seven thousand, two hundred thirty-three".