4123012421 has 4 divisors (see below), whose sum is σ = 4497831744. Its totient is φ = 3748193100.

The previous prime is 4123012417. The next prime is 4123012427. The reversal of 4123012421 is 1242103214.

4123012421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 4123012421 - 2² = 4123012417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4123012393 and 4123012402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123012427) 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, 187409645 + ... + 187409666.

It is an arithmetic number, because the mean of its divisors is an integer number (1124457936).

Almost surely, 2^4123012421 is an apocalyptic number.

It is an amenable number.

4123012421 is a deficient number, since it is larger than the sum of its proper divisors (374819323).

4123012421 is a wasteful number, since it uses less digits than its factorization.

4123012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374819322.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4123012421 is about 64210.6877474459. The cubic root of 4123012421 is about 1603.5095386508.

Adding to 4123012421 its reverse (1242103214), we get a palindrome (5365115635).

The spelling of 4123012421 in words is "four billion, one hundred twenty-three million, twelve thousand, four hundred twenty-one".