102120455 has 8 divisors (see below), whose sum is σ = 126770400. Its totient is φ = 78879136.

The previous prime is 102120449. The next prime is 102120467. The reversal of 102120455 is 554021201.

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

It is a cyclic number.

It is not a de Polignac number, because 102120455 - 2¹² = 102116359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351995 + ... + 352284.

It is an arithmetic number, because the mean of its divisors is an integer number (15846300).

Almost surely, 2^102120455 is an apocalyptic number.

102120455 is a deficient number, since it is larger than the sum of its proper divisors (24649945).

102120455 is an equidigital number, since it uses as much as digits as its factorization.

102120455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704313.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 102120455 is about 10105.4665899205. The cubic root of 102120455 is about 467.4167238020.

Adding to 102120455 its reverse (554021201), we get a palindrome (656141656).

The spelling of 102120455 in words is "one hundred two million, one hundred twenty thousand, four hundred fifty-five".