102122405 has 64 divisors (see below), whose sum is σ = 160745472. Its totient is φ = 60445440.

The previous prime is 102122393. The next prime is 102122407. The reversal of 102122405 is 504221201.

It is not a de Polignac number, because 102122405 - 2⁶ = 102122341 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 (102122407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 954362 + ... + 954468.

It is an arithmetic number, because the mean of its divisors is an integer number (2511648).

Almost surely, 2^102122405 is an apocalyptic number.

It is an amenable number.

102122405 is a deficient number, since it is larger than the sum of its proper divisors (58623067).

102122405 is a wasteful number, since it uses less digits than its factorization.

102122405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102122405 is about 10105.5630718926. The cubic root of 102122405 is about 467.4196989056.

Adding to 102122405 its reverse (504221201), we get a palindrome (606343606).

The spelling of 102122405 in words is "one hundred two million, one hundred twenty-two thousand, four hundred five".