1122142305 has 16 divisors (see below), whose sum is σ = 1806182784. Its totient is φ = 594890880.

The previous prime is 1122142303. The next prime is 1122142339. The reversal of 1122142305 is 5032412211.

It is not a de Polignac number, because 1122142305 - 2¹ = 1122142303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122142303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221476 + ... + 226485.

It is an arithmetic number, because the mean of its divisors is an integer number (112886424).

Almost surely, 2^1122142305 is an apocalyptic number.

1122142305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122142305 is a deficient number, since it is larger than the sum of its proper divisors (684040479).

1122142305 is a wasteful number, since it uses less digits than its factorization.

1122142305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448136.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1122142305 is about 33498.3925733758. The cubic root of 1122142305 is about 1039.1605359121.

Adding to 1122142305 its reverse (5032412211), we get a palindrome (6154554516).

The spelling of 1122142305 in words is "one billion, one hundred twenty-two million, one hundred forty-two thousand, three hundred five".