142545042 has 16 divisors (see below), whose sum is σ = 316766880. Its totient is φ = 47514996.

The previous prime is 142545041. The next prime is 142545047. The reversal of 142545042 is 240545241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 142544997 and 142545015.

It is not an unprimeable number, because it can be changed into a prime (142545041) 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, 1319808 + ... + 1319915.

It is an arithmetic number, because the mean of its divisors is an integer number (19797930).

Almost surely, 2^142545042 is an apocalyptic number.

142545042 is an abundant number, since it is smaller than the sum of its proper divisors (174221838).

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

142545042 is a wasteful number, since it uses less digits than its factorization.

142545042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639734 (or 2639728 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 142545042 is about 11939.2228390293. Note that the first 3 decimals coincide. The cubic root of 142545042 is about 522.3769901890.

The spelling of 142545042 in words is "one hundred forty-two million, five hundred forty-five thousand, forty-two".