542260321 has 4 divisors (see below), whose sum is σ = 544628500. Its totient is φ = 539892144.

The previous prime is 542260309. The next prime is 542260333. The reversal of 542260321 is 123062245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123062245 = 5 ⋅24612449.

It is an interprime number because it is at equal distance from previous prime (542260309) and next prime (542260333).

It can be written as a sum of positive squares in 2 ways, for example, as 278522721 + 263737600 = 16689^2 + 16240^2 .

It is a cyclic number.

It is not a de Polignac number, because 542260321 - 2¹⁷ = 542129249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542260391) 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 3 ways as a sum of consecutive naturals, for example, 1183746 + ... + 1184203.

It is an arithmetic number, because the mean of its divisors is an integer number (136157125).

Almost surely, 2^542260321 is an apocalyptic number.

It is an amenable number.

542260321 is a deficient number, since it is larger than the sum of its proper divisors (2368179).

542260321 is a wasteful number, since it uses less digits than its factorization.

542260321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368178.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 542260321 is about 23286.4836546869. The cubic root of 542260321 is about 815.4598987634.

The spelling of 542260321 in words is "five hundred forty-two million, two hundred sixty thousand, three hundred twenty-one".