1306123 has 16 divisors (see below), whose sum is σ = 1662976. Its totient is φ = 997920.

The previous prime is 1306121. The next prime is 1306133. The reversal of 1306123 is 3216031.

It is not a de Polignac number, because 1306123 - 2¹ = 1306121 is a prime.

It is a super-2 number, since 2×1306123² = 3411914582258, which contains 22 as substring.

1306123 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1306097 and 1306106.

It is not an unprimeable number, because it can be changed into a prime (1306121) 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, 2590 + ... + 3052.

It is an arithmetic number, because the mean of its divisors is an integer number (103936).

2^1306123 is an apocalyptic number.

1306123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1306123 is a deficient number, since it is larger than the sum of its proper divisors (356853).

1306123 is a wasteful number, since it uses less digits than its factorization.

1306123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1306123 is about 1142.8573839285. The cubic root of 1306123 is about 109.3103686730.

The spelling of 1306123 in words is "one million, three hundred six thousand, one hundred twenty-three".