102421233420 has 48 divisors (see below), whose sum is σ = 312850315008. Its totient is φ = 24829389760.

The previous prime is 102421233419. The next prime is 102421233533. The reversal of 102421233420 is 24332124201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77591184 + ... + 77592503.

It is an arithmetic number, because the mean of its divisors is an integer number (6517714896).

Almost surely, 2^102421233420 is an apocalyptic number.

102421233420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102421233420 is an abundant number, since it is smaller than the sum of its proper divisors (210429081588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102421233420 is a wasteful number, since it uses less digits than its factorization.

102421233420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155183710 (or 155183708 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 102421233420 its reverse (24332124201), we get a palindrome (126753357621).

The spelling of 102421233420 in words is "one hundred two billion, four hundred twenty-one million, two hundred thirty-three thousand, four hundred twenty".