102214145 has 16 divisors (see below), whose sum is σ = 134922240. Its totient is φ = 74332720.

The previous prime is 102214141. The next prime is 102214159. The reversal of 102214145 is 541412201.

It is a happy number.

It is not a de Polignac number, because 102214145 - 2² = 102214141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102214141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025 + ... + 14334.

It is an arithmetic number, because the mean of its divisors is an integer number (8432640).

Almost surely, 2^102214145 is an apocalyptic number.

It is an amenable number.

102214145 is a deficient number, since it is larger than the sum of its proper divisors (32708095).

102214145 is an equidigital number, since it uses as much as digits as its factorization.

102214145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15397 (or 15375 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 102214145 is about 10110.1011369818. The cubic root of 102214145 is about 467.5596233067.

Adding to 102214145 its reverse (541412201), we get a palindrome (643626346).

The spelling of 102214145 in words is "one hundred two million, two hundred fourteen thousand, one hundred forty-five".