40442533 has 4 divisors (see below), whose sum is σ = 42200928. Its totient is φ = 38684140.

The previous prime is 40442491. The next prime is 40442561. The reversal of 40442533 is 33524404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40442533 - 2¹⁷ = 40311461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40442498 and 40442507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40442593) 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, 879163 + ... + 879208.

It is an arithmetic number, because the mean of its divisors is an integer number (10550232).

Almost surely, 2^40442533 is an apocalyptic number.

It is an amenable number.

40442533 is a deficient number, since it is larger than the sum of its proper divisors (1758395).

40442533 is a wasteful number, since it uses less digits than its factorization.

40442533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758394.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 40442533 is about 6359.4443939703. Note that the first 3 decimals coincide. The cubic root of 40442533 is about 343.2517679955.

Adding to 40442533 its reverse (33524404), we get a palindrome (73966937).

The spelling of 40442533 in words is "forty million, four hundred forty-two thousand, five hundred thirty-three".