30434200421 has 4 divisors (see below), whose sum is σ = 30504487692. Its totient is φ = 30363913152.

The previous prime is 30434200393. The next prime is 30434200427. The reversal of 30434200421 is 12400243403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12400243403 = 59 ⋅210173617.

It can be written as a sum of positive squares in 2 ways, for example, as 16483992100 + 13950208321 = 128390^2 + 118111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30434200421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30434200427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35142986 + ... + 35143851.

It is an arithmetic number, because the mean of its divisors is an integer number (7626121923).

Almost surely, 2^30434200421 is an apocalyptic number.

It is an amenable number.

30434200421 is a deficient number, since it is larger than the sum of its proper divisors (70287271).

30434200421 is an equidigital number, since it uses as much as digits as its factorization.

30434200421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70287270.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 30434200421 its reverse (12400243403), we get a palindrome (42834443824).

The spelling of 30434200421 in words is "thirty billion, four hundred thirty-four million, two hundred thousand, four hundred twenty-one".