30420802402 has 4 divisors (see below), whose sum is σ = 45631203606. Its totient is φ = 15210401200.

The previous prime is 30420802367. The next prime is 30420802411. The reversal of 30420802402 is 20420802403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21243354001 + 9177448401 = 145751^2 + 95799^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7605200599 + ... + 7605200602.

Almost surely, 2^30420802402 is an apocalyptic number.

30420802402 is a deficient number, since it is larger than the sum of its proper divisors (15210401204).

30420802402 is a wasteful number, since it uses less digits than its factorization.

30420802402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15210401203.

The product of its (nonzero) digits is 3072, while the sum is 25.

Subtracting from 30420802402 its reverse (20420802403), we obtain a palindrome (9999999999).

The spelling of 30420802402 in words is "thirty billion, four hundred twenty million, eight hundred two thousand, four hundred two".