40142330 has 16 divisors (see below), whose sum is σ = 72810144. Its totient is φ = 15933840.

The previous prime is 40142281. The next prime is 40142339. The reversal of 40142330 is 3324104.

40142330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40142330² = 3222813315657800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40142299 and 40142308.

It is not an unprimeable number, because it can be changed into a prime (40142339) 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, 14012 + ... + 16631.

It is an arithmetic number, because the mean of its divisors is an integer number (4550634).

Almost surely, 2^40142330 is an apocalyptic number.

40142330 is a deficient number, since it is larger than the sum of its proper divisors (32667814).

40142330 is a wasteful number, since it uses less digits than its factorization.

40142330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30781.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40142330 is about 6335.7975030773. The cubic root of 40142330 is about 342.4003439616.

Adding to 40142330 its reverse (3324104), we get a palindrome (43466434).

The spelling of 40142330 in words is "forty million, one hundred forty-two thousand, three hundred thirty".