4120202421 has 12 divisors (see below), whose sum is σ = 6264635520. Its totient is φ = 2602233000.

The previous prime is 4120202413. The next prime is 4120202461. The reversal of 4120202421 is 1242020214.

4120202421 is a `hidden beast` number, since 41 + 2 + 0 + 202 + 421 = 666.

It is not a de Polignac number, because 4120202421 - 2³ = 4120202413 is a prime.

It is a super-2 number, since 2×4120202421² = 33952135980028522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4120202394 and 4120202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120202461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12047205 + ... + 12047546.

It is an arithmetic number, because the mean of its divisors is an integer number (522052960).

Almost surely, 2^4120202421 is an apocalyptic number.

It is an amenable number.

4120202421 is a deficient number, since it is larger than the sum of its proper divisors (2144433099).

4120202421 is a wasteful number, since it uses less digits than its factorization.

4120202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24094776 (or 24094773 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4120202421 is about 64188.8029254324. The cubic root of 4120202421 is about 1603.1451702899.

Adding to 4120202421 its reverse (1242020214), we get a palindrome (5362222635).

The spelling of 4120202421 in words is "four billion, one hundred twenty million, two hundred two thousand, four hundred twenty-one".