42733217 has 2 divisors, whose sum is σ = 42733218. Its totient is φ = 42733216.

The previous prime is 42733183. The next prime is 42733237. The reversal of 42733217 is 71233724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38887696 + 3845521 = 6236^2 + 1961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42733217 is a prime.

It is a super-2 number, since 2×42733217² = 3652255670338178, which contains 22 as substring.

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 42733217.

It is not a weakly prime, because it can be changed into another prime (42733237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21366608 + 21366609.

It is an arithmetic number, because the mean of its divisors is an integer number (21366609).

Almost surely, 2^42733217 is an apocalyptic number.

It is an amenable number.

42733217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42733217 is an equidigital number, since it uses as much as digits as its factorization.

42733217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 29.

The square root of 42733217 is about 6537.0648612355. The cubic root of 42733217 is about 349.6137698645.

The spelling of 42733217 in words is "forty-two million, seven hundred thirty-three thousand, two hundred seventeen".