40142885 has 4 divisors (see below), whose sum is σ = 48171468. Its totient is φ = 32114304.

The previous prime is 40142863. The next prime is 40142929. The reversal of 40142885 is 58824104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 23512801 = 4078^2 + 4849^2 .

It is a cyclic number.

It is not a de Polignac number, because 40142885 - 2⁶ = 40142821 is a prime.

It is a super-2 number, since 2×40142885² = 3222902432246450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4014284 + ... + 4014293.

It is an arithmetic number, because the mean of its divisors is an integer number (12042867).

Almost surely, 2^40142885 is an apocalyptic number.

It is an amenable number.

40142885 is a deficient number, since it is larger than the sum of its proper divisors (8028583).

40142885 is an equidigital number, since it uses as much as digits as its factorization.

40142885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8028582.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 40142885 is about 6335.8413016742. The cubic root of 40142885 is about 342.4019219411.

Adding to 40142885 its reverse (58824104), we get a palindrome (98966989).

The spelling of 40142885 in words is "forty million, one hundred forty-two thousand, eight hundred eighty-five".