40533442 has 4 divisors (see below), whose sum is σ = 60800166. Its totient is φ = 20266720.

The previous prime is 40533433. The next prime is 40533443. The reversal of 40533442 is 24433504.

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

It can be written as a sum of positive squares in only one way, i.e., 23319241 + 17214201 = 4829^2 + 4149^2 .

It is not an unprimeable number, because it can be changed into a prime (40533443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133359 + ... + 10133362.

Almost surely, 2^40533442 is an apocalyptic number.

40533442 is a deficient number, since it is larger than the sum of its proper divisors (20266724).

40533442 is a wasteful number, since it uses less digits than its factorization.

40533442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20266723.

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

The square root of 40533442 is about 6366.5879401764. The cubic root of 40533442 is about 343.5087690668.

Adding to 40533442 its reverse (24433504), we get a palindrome (64966946).

The spelling of 40533442 in words is "forty million, five hundred thirty-three thousand, four hundred forty-two".