30420902402 has 16 divisors (see below), whose sum is σ = 49783440672. Its totient is φ = 13826632320.

The previous prime is 30420902381. The next prime is 30420902411. The reversal of 30420902402 is 20420902403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294578 + ... + 384210.

It is an arithmetic number, because the mean of its divisors is an integer number (3111465042).

Almost surely, 2^30420902402 is an apocalyptic number.

30420902402 is a deficient number, since it is larger than the sum of its proper divisors (19362538270).

30420902402 is a wasteful number, since it uses less digits than its factorization.

30420902402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105073.

The product of its (nonzero) digits is 3456, while the sum is 26.

Subtracting from 30420902402 its reverse (20420902403), we obtain a palindrome (9999999999).

The spelling of 30420902402 in words is "thirty billion, four hundred twenty million, nine hundred two thousand, four hundred two".