40240533 has 4 divisors (see below), whose sum is σ = 53654048. Its totient is φ = 26827020.

The previous prime is 40240523. The next prime is 40240553. The reversal of 40240533 is 33504204.

It is a happy number.

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 not a de Polignac number, because 40240533 - 2¹² = 40236437 is a prime.

It is a super-2 number, since 2×40240533² = 3238600992248178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240523) 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 in 3 ways as a sum of consecutive naturals, for example, 6706753 + ... + 6706758.

It is an arithmetic number, because the mean of its divisors is an integer number (13413512).

Almost surely, 2^40240533 is an apocalyptic number.

It is an amenable number.

40240533 is a deficient number, since it is larger than the sum of its proper divisors (13413515).

40240533 is a wasteful number, since it uses less digits than its factorization.

40240533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13413514.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40240533 is about 6343.5426222262. The cubic root of 40240533 is about 342.6793292511.

Adding to 40240533 its reverse (33504204), we get a palindrome (73744737).

The spelling of 40240533 in words is "forty million, two hundred forty thousand, five hundred thirty-three".