123992087 has 2 divisors, whose sum is σ = 123992088. Its totient is φ = 123992086.

The previous prime is 123992039. The next prime is 123992129. The reversal of 123992087 is 780299321.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (780299321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123992087 - 2¹⁸ = 123729943 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123992017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61996043 + 61996044.

It is an arithmetic number, because the mean of its divisors is an integer number (61996044).

Almost surely, 2^123992087 is an apocalyptic number.

123992087 is a deficient number, since it is larger than the sum of its proper divisors (1).

123992087 is an equidigital number, since it uses as much as digits as its factorization.

123992087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 123992087 is about 11135.1734158027. The cubic root of 123992087 is about 498.6524876835.

The spelling of 123992087 in words is "one hundred twenty-three million, nine hundred ninety-two thousand, eighty-seven".