542221452 has 42 divisors (see below), whose sum is σ = 1422688148. Its totient is φ = 180739512.

The previous prime is 542221447. The next prime is 542221483. The reversal of 542221452 is 254122245.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 90058 + ... + 95889.

Almost surely, 2^542221452 is an apocalyptic number.

It is an amenable number.

542221452 is an abundant number, since it is smaller than the sum of its proper divisors (880466696).

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

542221452 is a wasteful number, since it uses less digits than its factorization.

542221452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185969 (or 185952 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 542221452 is about 23285.6490568762. The cubic root of 542221452 is about 815.4404143529.

Adding to 542221452 its reverse (254122245), we get a palindrome (796343697).

The spelling of 542221452 in words is "five hundred forty-two million, two hundred twenty-one thousand, four hundred fifty-two".