102523138 has 8 divisors (see below), whose sum is σ = 158745600. Its totient is φ = 49607940.

The previous prime is 102523133. The next prime is 102523139. The reversal of 102523138 is 831325201.

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

It is not an unprimeable number, because it can be changed into a prime (102523133) 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, 826738 + ... + 826861.

It is an arithmetic number, because the mean of its divisors is an integer number (19843200).

Almost surely, 2^102523138 is an apocalyptic number.

102523138 is a deficient number, since it is larger than the sum of its proper divisors (56222462).

102523138 is a wasteful number, since it uses less digits than its factorization.

102523138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653632.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 102523138 is about 10125.3710055484. The cubic root of 102523138 is about 468.0302930448.

Adding to 102523138 its reverse (831325201), we get a palindrome (933848339).

The spelling of 102523138 in words is "one hundred two million, five hundred twenty-three thousand, one hundred thirty-eight".