542040042 has 8 divisors (see below), whose sum is σ = 1084080096. Its totient is φ = 180680012.

The previous prime is 542040017. The next prime is 542040043. The reversal of 542040042 is 240040245.

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

542040042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (542040043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45169998 + ... + 45170009.

It is an arithmetic number, because the mean of its divisors is an integer number (135510012).

Almost surely, 2^542040042 is an apocalyptic number.

542040042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

542040042 is a wasteful number, since it uses less digits than its factorization.

542040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90340012.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 542040042 is about 23281.7534133493. The cubic root of 542040042 is about 815.3494640929.

Adding to 542040042 its reverse (240040245), we get a palindrome (782080287).

The spelling of 542040042 in words is "five hundred forty-two million, forty thousand, forty-two".