102315402 has 48 divisors (see below), whose sum is σ = 256943232. Its totient is φ = 28818720.

The previous prime is 102315373. The next prime is 102315403. The reversal of 102315402 is 204513201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102315403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3228 + ... + 14664.

It is an arithmetic number, because the mean of its divisors is an integer number (5352984).

Almost surely, 2^102315402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102315402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128471616).

102315402 is an abundant number, since it is smaller than the sum of its proper divisors (154627830).

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

102315402 is a wasteful number, since it uses less digits than its factorization.

102315402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 102315402 is about 10115.1076118843. The cubic root of 102315402 is about 467.7139661325.

Adding to 102315402 its reverse (204513201), we get a palindrome (306828603).

The spelling of 102315402 in words is "one hundred two million, three hundred fifteen thousand, four hundred two".