1121444142 has 32 divisors (see below), whose sum is σ = 2760479232. Its totient is φ = 295765344.

The previous prime is 1121444141. The next prime is 1121444147. The reversal of 1121444142 is 2414441211.

1121444142 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1121444142² = 2515273927252232328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121444141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1026418 + ... + 1027509.

It is an arithmetic number, because the mean of its divisors is an integer number (86264976).

Almost surely, 2^1121444142 is an apocalyptic number.

1121444142 is an abundant number, since it is smaller than the sum of its proper divisors (1639035090).

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

1121444142 is a wasteful number, since it uses less digits than its factorization.

1121444142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053952.

The product of its digits is 1024, while the sum is 24.

The square root of 1121444142 is about 33487.9701086823. The cubic root of 1121444142 is about 1038.9449797840.

Adding to 1121444142 its reverse (2414441211), we get a palindrome (3535885353).

The spelling of 1121444142 in words is "one billion, one hundred twenty-one million, four hundred forty-four thousand, one hundred forty-two".