87423 has 16 divisors (see below), whose sum is σ = 139776. Its totient is φ = 47520.

The previous prime is 87421. The next prime is 87427. The reversal of 87423 is 32478.

It is not a de Polignac number, because 87423 - 2¹ = 87421 is a prime.

It is a plaindrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 87393 and 87402.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87423.

It is not an unprimeable number, because it can be changed into a prime (87421) 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, 393 + ... + 573.

It is an arithmetic number, because the mean of its divisors is an integer number (8736).

2⁸⁷⁴²³ is an apocalyptic number.

87423 is a deficient number, since it is larger than the sum of its proper divisors (52353).

87423 is a wasteful number, since it uses less digits than its factorization.

87423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 1344, while the sum is 24.

The square root of 87423 is about 295.6738067533. The cubic root of 87423 is about 44.3821736733.

Subtracting from 87423 its reverse (32478), we obtain a palindrome (54945).

It can be divided in two parts, 874 and 23, that multiplied together give a palindrome (20102).

The spelling of 87423 in words is "eighty-seven thousand, four hundred twenty-three".