4123381 has 4 divisors (see below), whose sum is σ = 4184992. Its totient is φ = 4061772.

The previous prime is 4123369. The next prime is 4123387. The reversal of 4123381 is 1833214.

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 4123381 - 2⁵ = 4123349 is a prime.

It is a super-2 number, since 2×4123381² = 34004541742322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123387) 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, 30705 + ... + 30838.

It is an arithmetic number, because the mean of its divisors is an integer number (1046248).

Almost surely, 2^4123381 is an apocalyptic number.

It is an amenable number.

4123381 is a deficient number, since it is larger than the sum of its proper divisors (61611).

4123381 is an equidigital number, since it uses as much as digits as its factorization.

4123381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61610.

The product of its digits is 576, while the sum is 22.

The square root of 4123381 is about 2030.6109917953. The cubic root of 4123381 is about 160.3557319438.

Adding to 4123381 its reverse (1833214), we get a palindrome (5956595).

It can be divided in two parts, 41233 and 81, that added together give a palindrome (41314).

The spelling of 4123381 in words is "four million, one hundred twenty-three thousand, three hundred eighty-one".