102142130 has 24 divisors (see below), whose sum is σ = 187752492. Its totient is φ = 39994656.

The previous prime is 102142097. The next prime is 102142133. The reversal of 102142130 is 31241201.

It can be written as a sum of positive squares in 2 ways, for example, as 101949409 + 192721 = 10097^2 + 439^2 .

It is not an unprimeable number, because it can be changed into a prime (102142133) 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 11 ways as a sum of consecutive naturals, for example, 232451 + ... + 232889.

Almost surely, 2^102142130 is an apocalyptic number.

102142130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102142130 is a deficient number, since it is larger than the sum of its proper divisors (85610362).

102142130 is an frugal number, since it uses more digits than its factorization.

102142130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102142130 is about 10106.5389723683. The cubic root of 102142130 is about 467.4497910942.

Adding to 102142130 its reverse (31241201), we get a palindrome (133383331).

The spelling of 102142130 in words is "one hundred two million, one hundred forty-two thousand, one hundred thirty".