142409806 has 32 divisors (see below), whose sum is σ = 266918400. Its totient is φ = 55360800.

The previous prime is 142409783. The next prime is 142409819. The reversal of 142409806 is 608904241.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 101095 + ... + 102493.

It is an arithmetic number, because the mean of its divisors is an integer number (8341200).

Almost surely, 2^142409806 is an apocalyptic number.

142409806 is a deficient number, since it is larger than the sum of its proper divisors (124508594).

142409806 is a wasteful number, since it uses less digits than its factorization.

142409806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 142409806 is about 11933.5579774014. The cubic root of 142409806 is about 522.2117406041.

The spelling of 142409806 in words is "one hundred forty-two million, four hundred nine thousand, eight hundred six".