42342823 has 2 divisors, whose sum is σ = 42342824. Its totient is φ = 42342822.

The previous prime is 42342809. The next prime is 42342877. The reversal of 42342823 is 32824324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42342823 - 2¹³ = 42334631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42342791 and 42342800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42342803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171411 + 21171412.

It is an arithmetic number, because the mean of its divisors is an integer number (21171412).

Almost surely, 2^42342823 is an apocalyptic number.

42342823 is a deficient number, since it is larger than the sum of its proper divisors (1).

42342823 is an equidigital number, since it uses as much as digits as its factorization.

42342823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 42342823 is about 6507.1363133102. The cubic root of 42342823 is about 348.5458662437.

The spelling of 42342823 in words is "forty-two million, three hundred forty-two thousand, eight hundred twenty-three".