40215342 has 16 divisors (see below), whose sum is σ = 82392912. Its totient is φ = 13078080.

The previous prime is 40215283. The next prime is 40215347. The reversal of 40215342 is 24351204.

40215342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215347) 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 7 ways as a sum of consecutive naturals, for example, 81493 + ... + 81984.

It is an arithmetic number, because the mean of its divisors is an integer number (5149557).

Almost surely, 2^40215342 is an apocalyptic number.

40215342 is an abundant number, since it is smaller than the sum of its proper divisors (42177570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40215342 is a wasteful number, since it uses less digits than its factorization.

40215342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163523.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40215342 is about 6341.5567489379. The cubic root of 40215342 is about 342.6078073609.

Adding to 40215342 its reverse (24351204), we get a palindrome (64566546).

The spelling of 40215342 in words is "forty million, two hundred fifteen thousand, three hundred forty-two".