40332243 has 24 divisors (see below), whose sum is σ = 64720080. Its totient is φ = 22249920.

The previous prime is 40332181. The next prime is 40332277. The reversal of 40332243 is 34223304.

It is not a de Polignac number, because 40332243 - 2¹⁸ = 40070099 is a prime.

It is a super-2 number, since 2×40332243² = 3253379650822098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40332343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (2696670).

Almost surely, 2^40332243 is an apocalyptic number.

40332243 is a deficient number, since it is larger than the sum of its proper divisors (24387837).

40332243 is a wasteful number, since it uses less digits than its factorization.

40332243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 40332243 is about 6350.7671190180. The cubic root of 40332243 is about 342.9394589803.

Adding to 40332243 its reverse (34223304), we get a palindrome (74555547).

The spelling of 40332243 in words is "forty million, three hundred thirty-two thousand, two hundred forty-three".