42733237 has 2 divisors, whose sum is σ = 42733238. Its totient is φ = 42733236.

The previous prime is 42733217. The next prime is 42733247. The reversal of 42733237 is 73233724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 17422276 = 5031^2 + 4174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42733237 is a prime.

It is a super-2 number, since 2×42733237² = 3652259088996338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42733199 and 42733208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42733217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21366618 + 21366619.

It is an arithmetic number, because the mean of its divisors is an integer number (21366619).

Almost surely, 2^42733237 is an apocalyptic number.

It is an amenable number.

42733237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42733237 is an equidigital number, since it uses as much as digits as its factorization.

42733237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 31.

The square root of 42733237 is about 6537.0663909739. The cubic root of 42733237 is about 349.6138244066.

The spelling of 42733237 in words is "forty-two million, seven hundred thirty-three thousand, two hundred thirty-seven".