402102312 has 32 divisors (see below), whose sum is σ = 1007614080. Its totient is φ = 133719680.

The previous prime is 402102299. The next prime is 402102319. The reversal of 402102312 is 213201204.

It is a junction number, because it is equal to n+sod(n) for n = 402102291 and 402102300.

It is not an unprimeable number, because it can be changed into a prime (402102319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9093 + ... + 29780.

It is an arithmetic number, because the mean of its divisors is an integer number (31487940).

Almost surely, 2^402102312 is an apocalyptic number.

It is an amenable number.

402102312 is an abundant number, since it is smaller than the sum of its proper divisors (605511768).

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

402102312 is a wasteful number, since it uses less digits than its factorization.

402102312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39313 (or 39309 counting only the distinct ones).

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

The square root of 402102312 is about 20052.4889228245. The cubic root of 402102312 is about 738.0948754723.

Adding to 402102312 its reverse (213201204), we get a palindrome (615303516).

The spelling of 402102312 in words is "four hundred two million, one hundred two thousand, three hundred twelve".