542221423 has 2 divisors, whose sum is σ = 542221424. Its totient is φ = 542221422.

The previous prime is 542221399. The next prime is 542221447. The reversal of 542221423 is 324122245.

It is a balanced prime because it is at equal distance from previous prime (542221399) and next prime (542221447).

It is a cyclic number.

It is not a de Polignac number, because 542221423 - 2²¹ = 540124271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542221483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271110711 + 271110712.

It is an arithmetic number, because the mean of its divisors is an integer number (271110712).

Almost surely, 2^542221423 is an apocalyptic number.

542221423 is a deficient number, since it is larger than the sum of its proper divisors (1).

542221423 is an equidigital number, since it uses as much as digits as its factorization.

542221423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 25.

The square root of 542221423 is about 23285.6484341751. The cubic root of 542221423 is about 815.4403998153.

Adding to 542221423 its reverse (324122245), we get a palindrome (866343668).

The spelling of 542221423 in words is "five hundred forty-two million, two hundred twenty-one thousand, four hundred twenty-three".