40142665 has 8 divisors (see below), whose sum is σ = 48781440. Its totient is φ = 31707312.

The previous prime is 40142651. The next prime is 40142671. The reversal of 40142665 is 56624104.

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

It is a cyclic number.

It is not a de Polignac number, because 40142665 - 2¹³ = 40134473 is a prime.

It is a super-2 number, since 2×40142665² = 3222867106604450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50419 + ... + 51208.

It is an arithmetic number, because the mean of its divisors is an integer number (6097680).

Almost surely, 2^40142665 is an apocalyptic number.

It is an amenable number.

40142665 is a deficient number, since it is larger than the sum of its proper divisors (8638775).

40142665 is a wasteful number, since it uses less digits than its factorization.

40142665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101711.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40142665 is about 6335.8239401044. The cubic root of 40142665 is about 342.4012964375.

Adding to 40142665 its reverse (56624104), we get a palindrome (96766769).

The spelling of 40142665 in words is "forty million, one hundred forty-two thousand, six hundred sixty-five".