1244142266 has 8 divisors (see below), whose sum is σ = 1947353184. Its totient is φ = 595024540.

The previous prime is 1244142259. The next prime is 1244142293. The reversal of 1244142266 is 6622414421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1244142266² = 3095779956095229512, which contains 22 as substring.

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, 13523240 + ... + 13523331.

It is an arithmetic number, because the mean of its divisors is an integer number (243419148).

Almost surely, 2^1244142266 is an apocalyptic number.

1244142266 is a deficient number, since it is larger than the sum of its proper divisors (703210918).

1244142266 is a wasteful number, since it uses less digits than its factorization.

1244142266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27046596.

The product of its digits is 18432, while the sum is 32.

The square root of 1244142266 is about 35272.4009106270. The cubic root of 1244142266 is about 1075.5320289879.

Adding to 1244142266 its reverse (6622414421), we get a palindrome (7866556687).

The spelling of 1244142266 in words is "one billion, two hundred forty-four million, one hundred forty-two thousand, two hundred sixty-six".