40542374 has 4 divisors (see below), whose sum is σ = 60813564. Its totient is φ = 20271186.

The previous prime is 40542373. The next prime is 40542379. The reversal of 40542374 is 47324504.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40542373) 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 as a sum of consecutive naturals, namely, 10135592 + ... + 10135595.

It is an arithmetic number, because the mean of its divisors is an integer number (15203391).

Almost surely, 2^40542374 is an apocalyptic number.

40542374 is a deficient number, since it is larger than the sum of its proper divisors (20271190).

40542374 is a wasteful number, since it uses less digits than its factorization.

40542374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20271189.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 40542374 is about 6367.2893761788. The cubic root of 40542374 is about 343.5339992210.

Adding to 40542374 its reverse (47324504), we get a palindrome (87866878).

The spelling of 40542374 in words is "forty million, five hundred forty-two thousand, three hundred seventy-four".