102417745 has 8 divisors (see below), whose sum is σ = 122976000. Its totient is φ = 81884400.

The previous prime is 102417743. The next prime is 102417751. The reversal of 102417745 is 547714201.

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

It is not a de Polignac number, because 102417745 - 2¹ = 102417743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102417743) 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, 4506 + ... + 15004.

It is an arithmetic number, because the mean of its divisors is an integer number (15372000).

Almost surely, 2^102417745 is an apocalyptic number.

It is an amenable number.

102417745 is a deficient number, since it is larger than the sum of its proper divisors (20558255).

102417745 is a wasteful number, since it uses less digits than its factorization.

102417745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 102417745 is about 10120.1652654490. The cubic root of 102417745 is about 467.8698608734.

It can be divided in two parts, 1024 and 17745, that added together give a square (18769 = 137²).

The spelling of 102417745 in words is "one hundred two million, four hundred seventeen thousand, seven hundred forty-five".