1121400042 has 32 divisors (see below), whose sum is σ = 2576230272. Its totient is φ = 318771264.

The previous prime is 1121400041. The next prime is 1121400047. The reversal of 1121400042 is 2400041211.

1121400042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1121399994 and 1121400030.

It is not an unprimeable number, because it can be changed into a prime (1121400041) 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, 59493 + ... + 76040.

It is an arithmetic number, because the mean of its divisors is an integer number (80507196).

Almost surely, 2^1121400042 is an apocalyptic number.

1121400042 is an abundant number, since it is smaller than the sum of its proper divisors (1454830230).

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

1121400042 is a wasteful number, since it uses less digits than its factorization.

1121400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135742.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1121400042 is about 33487.3116568052. The cubic root of 1121400042 is about 1038.9313610126.

Adding to 1121400042 its reverse (2400041211), we get a palindrome (3521441253).

The spelling of 1121400042 in words is "one billion, one hundred twenty-one million, four hundred thousand, forty-two".