30021401 has 4 divisors (see below), whose sum is σ = 30250704. Its totient is φ = 29792100.

The previous prime is 30021377. The next prime is 30021437. The reversal of 30021401 is 10412003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10412003 = 7 ⋅1487429.

It is a cyclic number.

It is not a de Polignac number, because 30021401 - 2¹⁰ = 30020377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30021451) 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, 114455 + ... + 114716.

It is an arithmetic number, because the mean of its divisors is an integer number (7562676).

Almost surely, 2^30021401 is an apocalyptic number.

It is an amenable number.

30021401 is a deficient number, since it is larger than the sum of its proper divisors (229303).

30021401 is a wasteful number, since it uses less digits than its factorization.

30021401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229302.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 30021401 is about 5479.1788618369. The cubic root of 30021401 is about 310.7971195695.

Adding to 30021401 its reverse (10412003), we get a palindrome (40433404).

The spelling of 30021401 in words is "thirty million, twenty-one thousand, four hundred one".