4123420131 has 4 divisors (see below), whose sum is σ = 5497893512. Its totient is φ = 2748946752.

The previous prime is 4123420123. The next prime is 4123420157. The reversal of 4123420131 is 1310243214.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4123420131 - 2³ = 4123420123 is a prime.

It is a super-2 number, since 2×4123420131² = 34005187153472114322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4123420098 and 4123420107.

It is not an unprimeable number, because it can be changed into a prime (4123427131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687236686 + ... + 687236691.

It is an arithmetic number, because the mean of its divisors is an integer number (1374473378).

Almost surely, 2^4123420131 is an apocalyptic number.

4123420131 is a deficient number, since it is larger than the sum of its proper divisors (1374473381).

4123420131 is a wasteful number, since it uses less digits than its factorization.

4123420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374473380.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4123420131 is about 64213.8624519659. The cubic root of 4123420131 is about 1603.5623920226.

Adding to 4123420131 its reverse (1310243214), we get a palindrome (5433663345).

The spelling of 4123420131 in words is "four billion, one hundred twenty-three million, four hundred twenty thousand, one hundred thirty-one".