542222231 has 4 divisors (see below), whose sum is σ = 546361464. Its totient is φ = 538083000.

The previous prime is 542222227. The next prime is 542222279. The reversal of 542222231 is 132222245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542222231 - 2² = 542222227 is a prime.

It is a super-2 number, since 2×542222231² = 588009895581234722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542222197 and 542222206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542221231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2069420 + ... + 2069681.

It is an arithmetic number, because the mean of its divisors is an integer number (136590366).

Almost surely, 2^542222231 is an apocalyptic number.

542222231 is a deficient number, since it is larger than the sum of its proper divisors (4139233).

542222231 is a wasteful number, since it uses less digits than its factorization.

542222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139232.

The product of its digits is 1920, while the sum is 23.

The square root of 542222231 is about 23285.6657839109. The cubic root of 542222231 is about 815.4408048623.

Adding to 542222231 its reverse (132222245), we get a palindrome (674444476).

The spelling of 542222231 in words is "five hundred forty-two million, two hundred twenty-two thousand, two hundred thirty-one".