87824123 has 2 divisors, whose sum is σ = 87824124. Its totient is φ = 87824122.

The previous prime is 87824101. The next prime is 87824129. The reversal of 87824123 is 32142878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87824123 - 2¹² = 87820027 is a prime.

It is not a weakly prime, because it can be changed into another prime (87824129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43912061 + 43912062.

It is an arithmetic number, because the mean of its divisors is an integer number (43912062).

Almost surely, 2^87824123 is an apocalyptic number.

87824123 is a deficient number, since it is larger than the sum of its proper divisors (1).

87824123 is an equidigital number, since it uses as much as digits as its factorization.

87824123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 87824123 is about 9371.4525555007. The cubic root of 87824123 is about 444.4994970392.

The spelling of 87824123 in words is "eighty-seven million, eight hundred twenty-four thousand, one hundred twenty-three".