142440542 has 8 divisors (see below), whose sum is σ = 214780032. Its totient is φ = 70847200.

The previous prime is 142440539. The next prime is 142440577. The reversal of 142440542 is 245044241.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186059 + ... + 186822.

It is an arithmetic number, because the mean of its divisors is an integer number (26847504).

Almost surely, 2^142440542 is an apocalyptic number.

142440542 is a deficient number, since it is larger than the sum of its proper divisors (72339490).

142440542 is a wasteful number, since it uses less digits than its factorization.

142440542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373074.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 142440542 is about 11934.8457049096. The cubic root of 142440542 is about 522.2493071780.

Adding to 142440542 its reverse (245044241), we get a palindrome (387484783).

The spelling of 142440542 in words is "one hundred forty-two million, four hundred forty thousand, five hundred forty-two".