30003123402 has 96 divisors (see below), whose sum is σ = 79486043520. Its totient is φ = 7987973760.

The previous prime is 30003123379. The next prime is 30003123419. The reversal of 30003123402 is 20432130003.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43308 + ... + 248760.

It is an arithmetic number, because the mean of its divisors is an integer number (827979620).

Almost surely, 2^30003123402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30003123402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39743021760).

30003123402 is an abundant number, since it is smaller than the sum of its proper divisors (49482920118).

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

30003123402 is a wasteful number, since it uses less digits than its factorization.

30003123402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205548 (or 205545 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30003123402 its reverse (20432130003), we get a palindrome (50435253405).

The spelling of 30003123402 in words is "thirty billion, three million, one hundred twenty-three thousand, four hundred two".