102123445 has 8 divisors (see below), whose sum is σ = 122873760. Its totient is φ = 81481680.

The previous prime is 102123407. The next prime is 102123451. The reversal of 102123445 is 544321201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102123445 - 2²⁵ = 68569013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25051 + ... + 28840.

It is an arithmetic number, because the mean of its divisors is an integer number (15359220).

Almost surely, 2^102123445 is an apocalyptic number.

It is an amenable number.

102123445 is a deficient number, since it is larger than the sum of its proper divisors (20750315).

102123445 is an equidigital number, since it uses as much as digits as its factorization.

102123445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54275.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102123445 is about 10105.6145285678. The cubic root of 102123445 is about 467.4212856121.

Adding to 102123445 its reverse (544321201), we get a palindrome (646444646).

The spelling of 102123445 in words is "one hundred two million, one hundred twenty-three thousand, four hundred forty-five".