102142664 has 32 divisors (see below), whose sum is σ = 218385720. Its totient is φ = 44368896.

The previous prime is 102142661. The next prime is 102142687. The reversal of 102142664 is 466241201.

It can be written as a sum of positive squares in 4 ways, for example, as 53728900 + 48413764 = 7330^2 + 6958^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (102142661) 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 7 ways as a sum of consecutive naturals, for example, 27119 + ... + 30654.

Almost surely, 2^102142664 is an apocalyptic number.

It is an amenable number.

102142664 is an abundant number, since it is smaller than the sum of its proper divisors (116243056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102142664 is a wasteful number, since it uses less digits than its factorization.

102142664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57809 (or 57805 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 102142664 is about 10106.5653908734. The cubic root of 102142664 is about 467.4506057034.

Adding to 102142664 its reverse (466241201), we get a palindrome (568383865).

The spelling of 102142664 in words is "one hundred two million, one hundred forty-two thousand, six hundred sixty-four".