542332421 has 8 divisors (see below), whose sum is σ = 557295384. Its totient is φ = 527385600.

The previous prime is 542332381. The next prime is 542332423. The reversal of 542332421 is 124233245.

It can be written as a sum of positive squares in 4 ways, for example, as 343917025 + 198415396 = 18545^2 + 14086^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 542332421 - 2¹⁰ = 542331397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542332423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101021 + ... + 106253.

It is an arithmetic number, because the mean of its divisors is an integer number (69661923).

Almost surely, 2^542332421 is an apocalyptic number.

It is an amenable number.

542332421 is a deficient number, since it is larger than the sum of its proper divisors (14962963).

542332421 is a wasteful number, since it uses less digits than its factorization.

542332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071.

The product of its digits is 5760, while the sum is 26.

The square root of 542332421 is about 23288.0317115895. The cubic root of 542332421 is about 815.4960388797.

Adding to 542332421 its reverse (124233245), we get a palindrome (666565666).

The spelling of 542332421 in words is "five hundred forty-two million, three hundred thirty-two thousand, four hundred twenty-one".