102247420 has 96 divisors (see below), whose sum is σ = 247919616. Its totient is φ = 35351360.

The previous prime is 102247361. The next prime is 102247433. The reversal of 102247420 is 24742201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 102247391 and 102247400.

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, 612177 + ... + 612343.

It is an arithmetic number, because the mean of its divisors is an integer number (2582496).

Almost surely, 2^102247420 is an apocalyptic number.

102247420 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 102247420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123959808).

102247420 is an abundant number, since it is smaller than the sum of its proper divisors (145672196).

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

102247420 is a wasteful number, since it uses less digits than its factorization.

102247420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 102247420 is about 10111.7466344841. The cubic root of 102247420 is about 467.6103545713.

Adding to 102247420 its reverse (24742201), we get a palindrome (126989621).

The spelling of 102247420 in words is "one hundred two million, two hundred forty-seven thousand, four hundred twenty".