102122406 has 24 divisors (see below), whose sum is σ = 221695344. Its totient is φ = 33974640.

The previous prime is 102122393. The next prime is 102122407. The reversal of 102122406 is 604221201.

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

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 11 ways as a sum of consecutive naturals, for example, 4495 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (9237306).

Almost surely, 2^102122406 is an apocalyptic number.

102122406 is an abundant number, since it is smaller than the sum of its proper divisors (119572938).

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

102122406 is a wasteful number, since it uses less digits than its factorization.

102122406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036 (or 11033 counting only the distinct ones).

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

The square root of 102122406 is about 10105.5631213703. The cubic root of 102122406 is about 467.4197004313.

Adding to 102122406 its reverse (604221201), we get a palindrome (706343607).

The spelling of 102122406 in words is "one hundred two million, one hundred twenty-two thousand, four hundred six".