1142345305 has 8 divisors (see below), whose sum is σ = 1396679112. Its totient is φ = 896633088.

The previous prime is 1142345291. The next prime is 1142345317. The reversal of 1142345305 is 5035432411.

It can be written as a sum of positive squares in 4 ways, for example, as 603734041 + 538611264 = 24571^2 + 23208^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1142345305 - 2⁵ = 1142345273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2155104 + ... + 2155633.

It is an arithmetic number, because the mean of its divisors is an integer number (174584889).

Almost surely, 2^1142345305 is an apocalyptic number.

It is an amenable number.

1142345305 is a deficient number, since it is larger than the sum of its proper divisors (254333807).

1142345305 is an equidigital number, since it uses as much as digits as its factorization.

1142345305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310795.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1142345305 is about 33798.5991573615. The cubic root of 1142345305 is about 1045.3598129101.

Adding to 1142345305 its reverse (5035432411), we get a palindrome (6177777716).

The spelling of 1142345305 in words is "one billion, one hundred forty-two million, three hundred forty-five thousand, three hundred five".