122102406 has 12 divisors (see below), whose sum is σ = 264555252. Its totient is φ = 40700796.

The previous prime is 122102401. The next prime is 122102437. The reversal of 122102406 is 604201221.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6783467 = 122102406 / (1 + 2 + 2 + 1 + 0 + 2 + 4 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122102401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3391716 + ... + 3391751.

It is an arithmetic number, because the mean of its divisors is an integer number (22046271).

Almost surely, 2^122102406 is an apocalyptic number.

122102406 is an abundant number, since it is smaller than the sum of its proper divisors (142452846).

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

122102406 is a wasteful number, since it uses less digits than its factorization.

122102406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783475 (or 6783472 counting only the distinct ones).

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

The square root of 122102406 is about 11049.9957466055. The cubic root of 122102406 is about 496.1062982156.

Adding to 122102406 its reverse (604201221), we get a palindrome (726303627).

The spelling of 122102406 in words is "one hundred twenty-two million, one hundred two thousand, four hundred six".