542242 has 8 divisors (see below), whose sum is σ = 841500. Its totient is φ = 261744.

The previous prime is 542237. The next prime is 542251. The reversal of 542242 is 242245.

It can be written as a sum of positive squares in 2 ways, for example, as 516961 + 25281 = 719^2 + 159^2 .

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

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, 4617 + ... + 4732.

2⁵⁴²²⁴² is an apocalyptic number.

542242 is a deficient number, since it is larger than the sum of its proper divisors (299258).

542242 is a wasteful number, since it uses less digits than its factorization.

542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380.

The product of its digits is 640, while the sum is 19.

The square root of 542242 is about 736.3708304924. The cubic root of 542242 is about 81.5450714854.

Adding to 542242 its reverse (242245), we get a palindrome (784487).

It can be divided in two parts, 542 and 242, that added together give a square (784 = 28²).

The spelling of 542242 in words is "five hundred forty-two thousand, two hundred forty-two".