40542319 has 4 divisors (see below), whose sum is σ = 41940360. Its totient is φ = 39144280.

The previous prime is 40542301. The next prime is 40542323. The reversal of 40542319 is 91324504.

40542319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40542319 - 2⁹ = 40541807 is a prime.

It is a super-2 number, since 2×40542319² = 3287359259795522, 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 (40542379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698977 + ... + 699034.

It is an arithmetic number, because the mean of its divisors is an integer number (10485090).

Almost surely, 2^40542319 is an apocalyptic number.

40542319 is a deficient number, since it is larger than the sum of its proper divisors (1398041).

40542319 is a wasteful number, since it uses less digits than its factorization.

40542319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398040.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40542319 is about 6367.2850572281. The cubic root of 40542319 is about 343.5338438743.

It can be divided in two parts, 405 and 42319, that added together give a palindrome (42724).

The spelling of 40542319 in words is "forty million, five hundred forty-two thousand, three hundred nineteen".