102042313 has 4 divisors (see below), whose sum is σ = 108044820. Its totient is φ = 96039808.

The previous prime is 102042299. The next prime is 102042349. The reversal of 102042313 is 313240201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43718544 + 58323769 = 6612^2 + 7637^2 .

It is a cyclic number.

It is not a de Polignac number, because 102042313 - 2²¹ = 99945161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102042373) 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 3 ways as a sum of consecutive naturals, for example, 3001228 + ... + 3001261.

It is an arithmetic number, because the mean of its divisors is an integer number (27011205).

Almost surely, 2^102042313 is an apocalyptic number.

It is an amenable number.

102042313 is a deficient number, since it is larger than the sum of its proper divisors (6002507).

102042313 is an equidigital number, since it uses as much as digits as its factorization.

102042313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002506.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 102042313 is about 10101.5995268076. The cubic root of 102042313 is about 467.2974718271.

Adding to 102042313 its reverse (313240201), we get a palindrome (415282514).

The spelling of 102042313 in words is "one hundred two million, forty-two thousand, three hundred thirteen".