142347946 has 8 divisors (see below), whose sum is σ = 229946724. Its totient is φ = 65699040.

The previous prime is 142347929. The next prime is 142347973. The reversal of 142347946 is 649743241.

It can be written as a sum of positive squares in 2 ways, for example, as 99301225 + 43046721 = 9965^2 + 6561^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 142347899 and 142347908.

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, 2737435 + ... + 2737486.

Almost surely, 2^142347946 is an apocalyptic number.

142347946 is a deficient number, since it is larger than the sum of its proper divisors (87598778).

142347946 is a wasteful number, since it uses less digits than its factorization.

142347946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474936.

The product of its digits is 145152, while the sum is 40.

The square root of 142347946 is about 11930.9658452281. The cubic root of 142347946 is about 522.1361168398.

The spelling of 142347946 in words is "one hundred forty-two million, three hundred forty-seven thousand, nine hundred forty-six".