102420113 has 4 divisors (see below), whose sum is σ = 102489408. Its totient is φ = 102350820.

The previous prime is 102420077. The next prime is 102420119. The reversal of 102420113 is 311024201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311024201 = 4721 ⋅65881.

It is a cyclic number.

It is not a de Polignac number, because 102420113 - 2¹⁰ = 102419089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102420119) 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 3 ways as a sum of consecutive naturals, for example, 32381 + ... + 35402.

It is an arithmetic number, because the mean of its divisors is an integer number (25622352).

Almost surely, 2^102420113 is an apocalyptic number.

It is an amenable number.

102420113 is a deficient number, since it is larger than the sum of its proper divisors (69295).

102420113 is an equidigital number, since it uses as much as digits as its factorization.

102420113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69294.

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

The square root of 102420113 is about 10120.2822589096. The cubic root of 102420113 is about 467.8734667176.

Adding to 102420113 its reverse (311024201), we get a palindrome (413444314).

The spelling of 102420113 in words is "one hundred two million, four hundred twenty thousand, one hundred thirteen".