82123269 has 4 divisors (see below), whose sum is σ = 109497696. Its totient is φ = 54748844.

The previous prime is 82123267. The next prime is 82123289. The reversal of 82123269 is 96232128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82123269 - 2¹ = 82123267 is a prime.

It is a super-2 number, since 2×82123269² = 13488462622492722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82123267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13687209 + ... + 13687214.

It is an arithmetic number, because the mean of its divisors is an integer number (27374424).

Almost surely, 2^82123269 is an apocalyptic number.

It is an amenable number.

82123269 is a deficient number, since it is larger than the sum of its proper divisors (27374427).

82123269 is a wasteful number, since it uses less digits than its factorization.

82123269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27374426.

The product of its digits is 10368, while the sum is 33.

The square root of 82123269 is about 9062.1889739731. The cubic root of 82123269 is about 434.6657387218.

It can be divided in two parts, 821 and 23269, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 82123269 in words is "eighty-two million, one hundred twenty-three thousand, two hundred sixty-nine".