1022115442 has 4 divisors (see below), whose sum is σ = 1533173166. Its totient is φ = 511057720.

The previous prime is 1022115421. The next prime is 1022115449. The reversal of 1022115442 is 2445112201.

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

It can be written as a sum of positive squares in only one way, i.e., 618467161 + 403648281 = 24869^2 + 20091^2 .

It is not an unprimeable number, because it can be changed into a prime (1022115449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255528859 + ... + 255528862.

Almost surely, 2^1022115442 is an apocalyptic number.

1022115442 is a deficient number, since it is larger than the sum of its proper divisors (511057724).

1022115442 is an equidigital number, since it uses as much as digits as its factorization.

1022115442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511057723.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1022115442 is about 31970.5402206469. The cubic root of 1022115442 is about 1007.3181283566.

Adding to 1022115442 its reverse (2445112201), we get a palindrome (3467227643).

The spelling of 1022115442 in words is "one billion, twenty-two million, one hundred fifteen thousand, four hundred forty-two".