321402102 has 48 divisors (see below), whose sum is σ = 780418560. Its totient is φ = 86424192.

The previous prime is 321402097. The next prime is 321402113. The reversal of 321402102 is 201204123.

It is a super-2 number, since 2×321402102² = 206598622340036808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1102 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (16258720).

Almost surely, 2^321402102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321402102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390209280).

321402102 is an abundant number, since it is smaller than the sum of its proper divisors (459016458).

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

321402102 is a wasteful number, since it uses less digits than its factorization.

321402102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26525 (or 26508 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 321402102 is about 17927.6909277241. The cubic root of 321402102 is about 684.9879067963.

Adding to 321402102 its reverse (201204123), we get a palindrome (522606225).

The spelling of 321402102 in words is "three hundred twenty-one million, four hundred two thousand, one hundred two".