102123997 has 4 divisors (see below), whose sum is σ = 104296896. Its totient is φ = 99951100.

The previous prime is 102123977. The next prime is 102124037. The reversal of 102123997 is 799321201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102123997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086379 + ... + 1086472.

It is an arithmetic number, because the mean of its divisors is an integer number (26074224).

Almost surely, 2^102123997 is an apocalyptic number.

It is an amenable number.

102123997 is a deficient number, since it is larger than the sum of its proper divisors (2172899).

102123997 is an equidigital number, since it uses as much as digits as its factorization.

102123997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172898.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 102123997 is about 10105.6418400812. The cubic root of 102123997 is about 467.4221277827.

The spelling of 102123997 in words is "one hundred two million, one hundred twenty-three thousand, nine hundred ninety-seven".