102442403420 has 96 divisors (see below), whose sum is σ = 256857689088. Its totient is φ = 33555912192.

The previous prime is 102442403411. The next prime is 102442403473. The reversal of 102442403420 is 24304244201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102442403420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2740979 + ... + 2778101.

It is an arithmetic number, because the mean of its divisors is an integer number (2675600928).

Almost surely, 2^102442403420 is an apocalyptic number.

102442403420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102442403420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128428844544).

102442403420 is an abundant number, since it is smaller than the sum of its proper divisors (154415285668).

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

102442403420 is a wasteful number, since it uses less digits than its factorization.

102442403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38019 (or 38017 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 102442403420 its reverse (24304244201), we get a palindrome (126746647621).

The spelling of 102442403420 in words is "one hundred two billion, four hundred forty-two million, four hundred three thousand, four hundred twenty".