142785478 has 16 divisors (see below), whose sum is σ = 234146304. Its totient is φ = 64764360.

The previous prime is 142785451. The next prime is 142785529. The reversal of 142785478 is 874587241.

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 7 ways as a sum of consecutive naturals, for example, 4051 + ... + 17377.

It is an arithmetic number, because the mean of its divisors is an integer number (14634144).

Almost surely, 2^142785478 is an apocalyptic number.

142785478 is a deficient number, since it is larger than the sum of its proper divisors (91360826).

142785478 is a wasteful number, since it uses less digits than its factorization.

142785478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13827.

The product of its digits is 501760, while the sum is 46.

The square root of 142785478 is about 11949.2877612015. The cubic root of 142785478 is about 522.6705294130.

The spelling of 142785478 in words is "one hundred forty-two million, seven hundred eighty-five thousand, four hundred seventy-eight".