542344042 has 4 divisors (see below), whose sum is σ = 813516066. Its totient is φ = 271172020.

The previous prime is 542344001. The next prime is 542344063. The reversal of 542344042 is 240443245.

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

It can be written as a sum of positive squares in only one way, i.e., 442723681 + 99620361 = 21041^2 + 9981^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 542344042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135586009 + ... + 135586012.

Almost surely, 2^542344042 is an apocalyptic number.

542344042 is a deficient number, since it is larger than the sum of its proper divisors (271172024).

542344042 is a wasteful number, since it uses less digits than its factorization.

542344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271172023.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 542344042 is about 23288.2812160966. The cubic root of 542344042 is about 815.5018636047.

Adding to 542344042 its reverse (240443245), we get a palindrome (782787287).

The spelling of 542344042 in words is "five hundred forty-two million, three hundred forty-four thousand, forty-two".