142986774 has 16 divisors (see below), whose sum is σ = 326827008. Its totient is φ = 40853352.

The previous prime is 142986773. The next prime is 142986797. The reversal of 142986774 is 477689241.

142986774 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142986773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702182 + ... + 1702265.

It is an arithmetic number, because the mean of its divisors is an integer number (20426688).

Almost surely, 2^142986774 is an apocalyptic number.

142986774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

142986774 is an abundant number, since it is smaller than the sum of its proper divisors (183840234).

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

142986774 is a wasteful number, since it uses less digits than its factorization.

142986774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404459.

The product of its digits is 677376, while the sum is 48.

The square root of 142986774 is about 11957.7077234728. The cubic root of 142986774 is about 522.9160307656.

The spelling of 142986774 in words is "one hundred forty-two million, nine hundred eighty-six thousand, seven hundred seventy-four".