1142345321 has 16 divisors (see below), whose sum is σ = 1264385808. Its totient is φ = 1025356800.

The previous prime is 1142345317. The next prime is 1142345327. The reversal of 1142345321 is 1235432411.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 354757225 + 787588096 = 18835^2 + 28064^2 .

It is not a de Polignac number, because 1142345321 - 2² = 1142345317 is a prime.

It is a super-3 number, since 3×1142345321³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142345327) 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, 165581 + ... + 172341.

It is an arithmetic number, because the mean of its divisors is an integer number (79024113).

Almost surely, 2^1142345321 is an apocalyptic number.

It is an amenable number.

1142345321 is a deficient number, since it is larger than the sum of its proper divisors (122040487).

1142345321 is a wasteful number, since it uses less digits than its factorization.

1142345321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132.

The product of its digits is 2880, while the sum is 26.

The square root of 1142345321 is about 33798.5993940577. The cubic root of 1142345321 is about 1045.3598177907.

Adding to 1142345321 its reverse (1235432411), we get a palindrome (2377777732).

The spelling of 1142345321 in words is "one billion, one hundred forty-two million, three hundred forty-five thousand, three hundred twenty-one".