102123144 has 48 divisors (see below), whose sum is σ = 277105920. Its totient is φ = 33976800.

The previous prime is 102123143. The next prime is 102123173. The reversal of 102123144 is 441321201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102123143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51369 + ... + 53319.

It is an arithmetic number, because the mean of its divisors is an integer number (5773040).

Almost surely, 2^102123144 is an apocalyptic number.

It is an amenable number.

102123144 is an abundant number, since it is smaller than the sum of its proper divisors (174982776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102123144 is a wasteful number, since it uses less digits than its factorization.

102123144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102123144 is about 10105.5996358455. The cubic root of 102123144 is about 467.4208263837.

Adding to 102123144 its reverse (441321201), we get a palindrome (543444345).

The spelling of 102123144 in words is "one hundred two million, one hundred twenty-three thousand, one hundred forty-four".