1122042042 has 48 divisors (see below), whose sum is σ = 2669734080. Its totient is φ = 337752000.

The previous prime is 1122042029. The next prime is 1122042049. The reversal of 1122042042 is 2402402211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1122042049) 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 23 ways as a sum of consecutive naturals, for example, 11134 + ... + 48662.

It is an arithmetic number, because the mean of its divisors is an integer number (55619460).

Almost surely, 2^1122042042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122042042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334867040).

1122042042 is an abundant number, since it is smaller than the sum of its proper divisors (1547692038).

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

1122042042 is a wasteful number, since it uses less digits than its factorization.

1122042042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37699 (or 37696 counting only the distinct ones).

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

The square root of 1122042042 is about 33496.8960054510. The cubic root of 1122042042 is about 1039.1295854538.

Adding to 1122042042 its reverse (2402402211), we get a palindrome (3524444253).

The spelling of 1122042042 in words is "one billion, one hundred twenty-two million, forty-two thousand, forty-two".