102042121313 has 4 divisors (see below), whose sum is σ = 111318677808. Its totient is φ = 92765564820.

The previous prime is 102042121289. The next prime is 102042121339. The reversal of 102042121313 is 313121240201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102042121313 - 2⁶ = 102042121249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102042121213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4638278231 + ... + 4638278252.

It is an arithmetic number, because the mean of its divisors is an integer number (27829669452).

Almost surely, 2^102042121313 is an apocalyptic number.

It is an amenable number.

102042121313 is a deficient number, since it is larger than the sum of its proper divisors (9276556495).

102042121313 is an equidigital number, since it uses as much as digits as its factorization.

102042121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9276556494.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 102042121313 its reverse (313121240201), we get a palindrome (415163361514).

The spelling of 102042121313 in words is "one hundred two billion, forty-two million, one hundred twenty-one thousand, three hundred thirteen".