142856946 has 20 divisors (see below), whose sum is σ = 320105742. Its totient is φ = 47618928.

The previous prime is 142856921. The next prime is 142856947. The reversal of 142856946 is 649658241.

142856946 is a `hidden beast` number, since 1 + 42 + 8 + 569 + 46 = 666.

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 12006225 = 11439^2 + 3465^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142856947) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 440755 + ... + 441078.

Almost surely, 2^142856946 is an apocalyptic number.

142856946 is an abundant number, since it is smaller than the sum of its proper divisors (177248796).

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

142856946 is an equidigital number, since it uses as much as digits as its factorization.

142856946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881847 (or 881838 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 142856946 is about 11952.2778582160. The cubic root of 142856946 is about 522.7577184544.

The spelling of 142856946 in words is "one hundred forty-two million, eight hundred fifty-six thousand, nine hundred forty-six".