102420332 has 48 divisors (see below), whose sum is σ = 210739200. Its totient is φ = 42645312.

The previous prime is 102420323. The next prime is 102420349. The reversal of 102420332 is 233024201.

It is a self number, because there is not a number n which added to its sum of digits gives 102420332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293294 + ... + 293642.

It is an arithmetic number, because the mean of its divisors is an integer number (4390400).

Almost surely, 2^102420332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102420332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105369600).

102420332 is an abundant number, since it is smaller than the sum of its proper divisors (108318868).

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

102420332 is a wasteful number, since it uses less digits than its factorization.

102420332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 102420332 is about 10120.2930787601. The cubic root of 102420332 is about 467.8738001944.

Adding to 102420332 its reverse (233024201), we get a palindrome (335444533).

The spelling of 102420332 in words is "one hundred two million, four hundred twenty thousand, three hundred thirty-two".