1122020442 has 12 divisors (see below), whose sum is σ = 2431044330. Its totient is φ = 374006808.

The previous prime is 1122020429. The next prime is 1122020467. The reversal of 1122020442 is 2440202211.

1122020442 is a `hidden beast` number, since 1 + 1 + 220 + 2 + 0 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 601769961 + 520250481 = 24531^2 + 22809^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 62334469 = 1122020442 / (1 + 1 + 2 + 2 + 0 + 2 + 0 + 4 + 4 + 2).

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 5 ways as a sum of consecutive naturals, for example, 31167217 + ... + 31167252.

Almost surely, 2^1122020442 is an apocalyptic number.

1122020442 is an abundant number, since it is smaller than the sum of its proper divisors (1309023888).

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

1122020442 is a wasteful number, since it uses less digits than its factorization.

1122020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62334477 (or 62334474 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1122020442 is about 33496.5735859655. The cubic root of 1122020442 is about 1039.1229174496.

Adding to 1122020442 its reverse (2440202211), we get a palindrome (3562222653).

The spelling of 1122020442 in words is "one billion, one hundred twenty-two million, twenty thousand, four hundred forty-two".