1243541222 has 32 divisors (see below), whose sum is σ = 2447988480. Its totient is φ = 458995680.

The previous prime is 1243541213. The next prime is 1243541227. The reversal of 1243541222 is 2221453421.

It is a junction number, because it is equal to n+sod(n) for n = 1243541191 and 1243541200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243541227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209573 + ... + 215424.

It is an arithmetic number, because the mean of its divisors is an integer number (76499640).

Almost surely, 2^1243541222 is an apocalyptic number.

1243541222 is a deficient number, since it is larger than the sum of its proper divisors (1204447258).

1243541222 is a wasteful number, since it uses less digits than its factorization.

1243541222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425036.

The product of its digits is 3840, while the sum is 26.

The square root of 1243541222 is about 35263.8798489332. The cubic root of 1243541222 is about 1075.3588049076.

Adding to 1243541222 its reverse (2221453421), we get a palindrome (3464994643).

The spelling of 1243541222 in words is "one billion, two hundred forty-three million, five hundred forty-one thousand, two hundred twenty-two".