1345442305 has 16 divisors (see below), whose sum is σ = 1710840960. Its totient is φ = 1012246272.

The previous prime is 1345442249. The next prime is 1345442317. The reversal of 1345442305 is 5032445431.

It is a cyclic number.

It is not a de Polignac number, because 1345442305 - 2⁷ = 1345442177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117526 + ... + 128464.

It is an arithmetic number, because the mean of its divisors is an integer number (106927560).

Almost surely, 2^1345442305 is an apocalyptic number.

It is an amenable number.

1345442305 is a deficient number, since it is larger than the sum of its proper divisors (365398655).

1345442305 is a wasteful number, since it uses less digits than its factorization.

1345442305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12408.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1345442305 is about 36680.2713321480. The cubic root of 1345442305 is about 1103.9642923343.

Adding to 1345442305 its reverse (5032445431), we get a palindrome (6377887736).

The spelling of 1345442305 in words is "one billion, three hundred forty-five million, four hundred forty-two thousand, three hundred five".