102120312430 has 16 divisors (see below), whose sum is σ = 186031221264. Its totient is φ = 40355978560.

The previous prime is 102120312403. The next prime is 102120312433. The reversal of 102120312430 is 34213021201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102120312398 and 102120312407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120312433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61517431 + ... + 61519090.

It is an arithmetic number, because the mean of its divisors is an integer number (11626951329).

Almost surely, 2^102120312430 is an apocalyptic number.

102120312430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102120312430 is a deficient number, since it is larger than the sum of its proper divisors (83910908834).

102120312430 is a wasteful number, since it uses less digits than its factorization.

102120312430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123036611.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102120312430 its reverse (34213021201), we get a palindrome (136333333631).

The spelling of 102120312430 in words is "one hundred two billion, one hundred twenty million, three hundred twelve thousand, four hundred thirty".