542221000 has 64 divisors (see below), whose sum is σ = 1309800960. Its totient is φ = 209880000.

The previous prime is 542220971. The next prime is 542221049. The reversal of 542221000 is 122245.

It is a super-2 number, since 2×542221000² = 588007225682000000, which contains 22 as substring.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22255 + ... + 39745.

It is an arithmetic number, because the mean of its divisors is an integer number (20465640).

Almost surely, 2^542221000 is an apocalyptic number.

542221000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654900480).

542221000 is an abundant number, since it is smaller than the sum of its proper divisors (767579960).

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

542221000 is a wasteful number, since it uses less digits than its factorization.

542221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17543 (or 17529 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 542221000 is about 23285.6393513255. The cubic root of 542221000 is about 815.4401877670.

Adding to 542221000 its reverse (122245), we get a palindrome (542343245).

The spelling of 542221000 in words is "five hundred forty-two million, two hundred twenty-one thousand".