85123043 has 2 divisors, whose sum is σ = 85123044. Its totient is φ = 85123042.

The previous prime is 85123007. The next prime is 85123061. The reversal of 85123043 is 34032158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85123043 - 2¹⁰ = 85122019 is a prime.

It is not a weakly prime, because it can be changed into another prime (85120043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42561521 + 42561522.

It is an arithmetic number, because the mean of its divisors is an integer number (42561522).

Almost surely, 2^85123043 is an apocalyptic number.

85123043 is a deficient number, since it is larger than the sum of its proper divisors (1).

85123043 is an equidigital number, since it uses as much as digits as its factorization.

85123043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 85123043 is about 9226.2149877401. The cubic root of 85123043 is about 439.8950214430.

The spelling of 85123043 in words is "eighty-five million, one hundred twenty-three thousand, forty-three".