42533993 has 4 divisors (see below), whose sum is σ = 42548820. Its totient is φ = 42519168.

The previous prime is 42533977. The next prime is 42533999. The reversal of 42533993 is 39933524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36638809 + 5895184 = 6053^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 42533993 - 2⁴ = 42533977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42533999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580 + ... + 9357.

It is an arithmetic number, because the mean of its divisors is an integer number (10637205).

Almost surely, 2^42533993 is an apocalyptic number.

It is an amenable number.

42533993 is a deficient number, since it is larger than the sum of its proper divisors (14827).

42533993 is a wasteful number, since it uses less digits than its factorization.

42533993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14826.

The product of its digits is 87480, while the sum is 38.

The square root of 42533993 is about 6521.8090281762. The cubic root of 42533993 is about 349.0696188184.

The spelling of 42533993 in words is "forty-two million, five hundred thirty-three thousand, nine hundred ninety-three".