30420402 has 16 divisors (see below), whose sum is σ = 60899040. Its totient is φ = 10130432.

The previous prime is 30420359. The next prime is 30420407. The reversal of 30420402 is 20402403.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30420407) 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, 7474 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (3806190).

Almost surely, 2^30420402 is an apocalyptic number.

30420402 is an abundant number, since it is smaller than the sum of its proper divisors (30478638).

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

30420402 is a wasteful number, since it uses less digits than its factorization.

30420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 30420402 is about 5515.4693363303. The cubic root of 30420402 is about 312.1679528012.

Adding to 30420402 its reverse (20402403), we get a palindrome (50822805).

It can be divided in two parts, 304 and 20402, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 30420402 in words is "thirty million, four hundred twenty thousand, four hundred two".