142401806 has 8 divisors (see below), whose sum is σ = 215599320. Its totient is φ = 70535368.

The previous prime is 142401799. The next prime is 142401823. The reversal of 142401806 is 608104241.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 332501 + ... + 332928.

It is an arithmetic number, because the mean of its divisors is an integer number (26949915).

Almost surely, 2^142401806 is an apocalyptic number.

142401806 is a deficient number, since it is larger than the sum of its proper divisors (73197514).

142401806 is a wasteful number, since it uses less digits than its factorization.

142401806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665538.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 142401806 is about 11933.2227834730. Note that the first 3 decimals coincide. The cubic root of 142401806 is about 522.2019618483.

The spelling of 142401806 in words is "one hundred forty-two million, four hundred one thousand, eight hundred six".