40807142 has 8 divisors (see below), whose sum is σ = 61240536. Its totient is φ = 20393632.

The previous prime is 40807141. The next prime is 40807159. The reversal of 40807142 is 24170804.

40807142 is nontrivially palindromic in base 4.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40807141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2273 + ... + 9315.

It is an arithmetic number, because the mean of its divisors is an integer number (7655067).

Almost surely, 2^40807142 is an apocalyptic number.

40807142 is a deficient number, since it is larger than the sum of its proper divisors (20433394).

40807142 is a wasteful number, since it uses less digits than its factorization.

40807142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9942.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 40807142 is about 6388.0468063407. The cubic root of 40807142 is about 344.2802104390.

Adding to 40807142 its reverse (24170804), we get a palindrome (64977946).

The spelling of 40807142 in words is "forty million, eight hundred seven thousand, one hundred forty-two".