1254040222 has 4 divisors (see below), whose sum is σ = 1881060336. Its totient is φ = 627020110.

The previous prime is 1254040211. The next prime is 1254040253. The reversal of 1254040222 is 2220404521.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1254040193 and 1254040202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313510054 + ... + 313510057.

It is an arithmetic number, because the mean of its divisors is an integer number (470265084).

Almost surely, 2^1254040222 is an apocalyptic number.

1254040222 is a deficient number, since it is larger than the sum of its proper divisors (627020114).

1254040222 is an equidigital number, since it uses as much as digits as its factorization.

1254040222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627020113.

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

The square root of 1254040222 is about 35412.4303317352. The cubic root of 1254040222 is about 1078.3766827741.

Adding to 1254040222 its reverse (2220404521), we get a palindrome (3474444743).

The spelling of 1254040222 in words is "one billion, two hundred fifty-four million, forty thousand, two hundred twenty-two".