1345123 has 4 divisors (see below), whose sum is σ = 1448608. Its totient is φ = 1241640.

The previous prime is 1345117. The next prime is 1345129. The reversal of 1345123 is 3215431.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1345117) and next prime (1345129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345123.

It is not an unprimeable number, because it can be changed into a prime (1345129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51723 + ... + 51748.

It is an arithmetic number, because the mean of its divisors is an integer number (362152).

2^1345123 is an apocalyptic number.

1345123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1345123 is a deficient number, since it is larger than the sum of its proper divisors (103485).

1345123 is a wasteful number, since it uses less digits than its factorization.

1345123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103484.

The product of its digits is 360, while the sum is 19.

The square root of 1345123 is about 1159.7943783275. The cubic root of 1345123 is about 110.3876953222.

The spelling of 1345123 in words is "one million, three hundred forty-five thousand, one hundred twenty-three".