1120421042 has 16 divisors (see below), whose sum is σ = 1817688600. Its totient is φ = 514895232.

The previous prime is 1120421041. The next prime is 1120421047. The reversal of 1120421042 is 2401240211.

It can be written as a sum of positive squares in 4 ways, for example, as 973502401 + 146918641 = 31201^2 + 12121^2 .

It is a super-2 number, since 2×1120421042² = 2510686622712731528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1120421042.

It is not an unprimeable number, because it can be changed into a prime (1120421041) 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 7 ways as a sum of consecutive naturals, for example, 86417 + ... + 98532.

Almost surely, 2^1120421042 is an apocalyptic number.

1120421042 is a deficient number, since it is larger than the sum of its proper divisors (697267558).

1120421042 is a wasteful number, since it uses less digits than its factorization.

1120421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185197.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1120421042 is about 33472.6909883266. The cubic root of 1120421042 is about 1038.6289384773.

Adding to 1120421042 its reverse (2401240211), we get a palindrome (3521661253).

The spelling of 1120421042 in words is "one billion, one hundred twenty million, four hundred twenty-one thousand, forty-two".