142478766 has 12 divisors (see below), whose sum is σ = 308704032. Its totient is φ = 47492916.

The previous prime is 142478719. The next prime is 142478773. The reversal of 142478766 is 667874241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3957726 + ... + 3957761.

It is an arithmetic number, because the mean of its divisors is an integer number (25725336).

Almost surely, 2^142478766 is an apocalyptic number.

142478766 is an abundant number, since it is smaller than the sum of its proper divisors (166225266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142478766 is a wasteful number, since it uses less digits than its factorization.

142478766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915495 (or 7915492 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 142478766 is about 11936.4469587897. The cubic root of 142478766 is about 522.2960182989.

The spelling of 142478766 in words is "one hundred forty-two million, four hundred seventy-eight thousand, seven hundred sixty-six".