142556542 has 4 divisors (see below), whose sum is σ = 213834816. Its totient is φ = 71278270.

The previous prime is 142556539. The next prime is 142556581. The reversal of 142556542 is 245655241.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 142556498 and 142556507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35639134 + ... + 35639137.

It is an arithmetic number, because the mean of its divisors is an integer number (53458704).

Almost surely, 2^142556542 is an apocalyptic number.

142556542 is a deficient number, since it is larger than the sum of its proper divisors (71278274).

142556542 is an equidigital number, since it uses as much as digits as its factorization.

142556542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71278273.

The product of its digits is 48000, while the sum is 34.

The square root of 142556542 is about 11939.7044352027. The cubic root of 142556542 is about 522.3910376175.

The spelling of 142556542 in words is "one hundred forty-two million, five hundred fifty-six thousand, five hundred forty-two".