42733997 has 2 divisors, whose sum is σ = 42733998. Its totient is φ = 42733996.

The previous prime is 42733993. The next prime is 42734011. The reversal of 42733997 is 79933724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 4553956 = 6179^2 + 2134^2 .

It is a cyclic number.

It is not a de Polignac number, because 42733997 - 2² = 42733993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42733993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21366998 + 21366999.

It is an arithmetic number, because the mean of its divisors is an integer number (21366999).

Almost surely, 2^42733997 is an apocalyptic number.

It is an amenable number.

42733997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42733997 is an equidigital number, since it uses as much as digits as its factorization.

42733997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 44.

The square root of 42733997 is about 6537.1245207660. The cubic root of 42733997 is about 349.6158969926.

The spelling of 42733997 in words is "forty-two million, seven hundred thirty-three thousand, nine hundred ninety-seven".