102402111 has 24 divisors (see below), whose sum is σ = 161533440. Its totient is φ = 57518832.

The previous prime is 102402109. The next prime is 102402119. The reversal of 102402111 is 111204201.

It is a happy number.

It is not a de Polignac number, because 102402111 - 2¹ = 102402109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102402119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2770 + ... + 14576.

It is an arithmetic number, because the mean of its divisors is an integer number (6730560).

Almost surely, 2^102402111 is an apocalyptic number.

102402111 is a deficient number, since it is larger than the sum of its proper divisors (59131329).

102402111 is a wasteful number, since it uses less digits than its factorization.

102402111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883 (or 11876 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102402111 is about 10119.3928177534. The cubic root of 102402111 is about 467.8460529886.

Adding to 102402111 its reverse (111204201), we get a palindrome (213606312).

The spelling of 102402111 in words is "one hundred two million, four hundred two thousand, one hundred eleven".