142543746 has 16 divisors (see below), whose sum is σ = 316764000. Its totient is φ = 47514564.

The previous prime is 142543727. The next prime is 142543777. The reversal of 142543746 is 647345241.

142543746 is a `hidden beast` number, since 1 + 42 + 543 + 74 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 142543746.

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, 1319796 + ... + 1319903.

It is an arithmetic number, because the mean of its divisors is an integer number (19797750).

Almost surely, 2^142543746 is an apocalyptic number.

142543746 is an abundant number, since it is smaller than the sum of its proper divisors (174220254).

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

142543746 is a wasteful number, since it uses less digits than its factorization.

142543746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639710 (or 2639704 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 142543746 is about 11939.1685640165. The cubic root of 142543746 is about 522.3754070575.

Adding to 142543746 its reverse (647345241), we get a palindrome (789888987).

The spelling of 142543746 in words is "one hundred forty-two million, five hundred forty-three thousand, seven hundred forty-six".