1142345121 has 8 divisors (see below), whose sum is σ = 1526052384. Its totient is φ = 760100640.

The previous prime is 1142345101. The next prime is 1142345131. The reversal of 1142345121 is 1215432411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142345121 - 2⁵ = 1142345089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142345091 and 1142345100.

It is not an unprimeable number, because it can be changed into a prime (1142345101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363871 + ... + 366996.

It is an arithmetic number, because the mean of its divisors is an integer number (190756548).

Almost surely, 2^1142345121 is an apocalyptic number.

It is an amenable number.

1142345121 is a deficient number, since it is larger than the sum of its proper divisors (383707263).

1142345121 is an equidigital number, since it uses as much as digits as its factorization.

1142345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731391.

The product of its digits is 960, while the sum is 24.

The square root of 1142345121 is about 33798.5964353551. The cubic root of 1142345121 is about 1045.3597567840.

Adding to 1142345121 its reverse (1215432411), we get a palindrome (2357777532).

The spelling of 1142345121 in words is "one billion, one hundred forty-two million, three hundred forty-five thousand, one hundred twenty-one".