82090123 has 4 divisors (see below), whose sum is σ = 82135960. Its totient is φ = 82044288.

The previous prime is 82090121. The next prime is 82090171. The reversal of 82090123 is 32109028.

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

It is a cyclic number.

It is not a de Polignac number, because 82090123 - 2¹ = 82090121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82090121) 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, 20118 + ... + 23851.

It is an arithmetic number, because the mean of its divisors is an integer number (20533990).

Almost surely, 2^82090123 is an apocalyptic number.

82090123 is a deficient number, since it is larger than the sum of its proper divisors (45837).

82090123 is a wasteful number, since it uses less digits than its factorization.

82090123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45836.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 82090123 is about 9060.3599818109. The cubic root of 82090123 is about 434.6072519717.

The spelling of 82090123 in words is "eighty-two million, ninety thousand, one hundred twenty-three".