222142540 has 12 divisors (see below), whose sum is σ = 466499376. Its totient is φ = 88857008.

The previous prime is 222142511. The next prime is 222142573. The reversal of 222142540 is 45241222.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5553544 + ... + 5553583.

It is an arithmetic number, because the mean of its divisors is an integer number (38874948).

Almost surely, 2^222142540 is an apocalyptic number.

222142540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222142540 is an abundant number, since it is smaller than the sum of its proper divisors (244356836).

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

222142540 is a wasteful number, since it uses less digits than its factorization.

222142540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11107136 (or 11107134 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 222142540 is about 14904.4469873927. The cubic root of 222142540 is about 605.6344595192.

Adding to 222142540 its reverse (45241222), we get a palindrome (267383762).

The spelling of 222142540 in words is "two hundred twenty-two million, one hundred forty-two thousand, five hundred forty".