102122245 has 8 divisors (see below), whose sum is σ = 128996640. Its totient is φ = 77397840.

The previous prime is 102122243. The next prime is 102122299. The reversal of 102122245 is 542221201.

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

It is not a de Polignac number, because 102122245 - 2¹ = 102122243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537391 + ... + 537580.

It is an arithmetic number, because the mean of its divisors is an integer number (16124580).

Almost surely, 2^102122245 is an apocalyptic number.

It is an amenable number.

102122245 is a deficient number, since it is larger than the sum of its proper divisors (26874395).

102122245 is a wasteful number, since it uses less digits than its factorization.

102122245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074995.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 102122245 is about 10105.5551554578. Note that the first 3 decimals coincide. The cubic root of 102122245 is about 467.4194547960.

Adding to 102122245 its reverse (542221201), we get a palindrome (644343446).

The spelling of 102122245 in words is "one hundred two million, one hundred twenty-two thousand, two hundred forty-five".