4122256438 has 4 divisors (see below), whose sum is σ = 6183384660. Its totient is φ = 2061128218.

The previous prime is 4122256429. The next prime is 4122256451. The reversal of 4122256438 is 8346522214.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8346522214 = 2 ⋅4173261107.

It is a junction number, because it is equal to n+sod(n) for n = 4122256397 and 4122256406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030564108 + ... + 1030564111.

It is an arithmetic number, because the mean of its divisors is an integer number (1545846165).

Almost surely, 2^4122256438 is an apocalyptic number.

4122256438 is a deficient number, since it is larger than the sum of its proper divisors (2061128222).

4122256438 is a wasteful number, since it uses less digits than its factorization.

4122256438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061128221.

The product of its digits is 92160, while the sum is 37.

The square root of 4122256438 is about 64204.8007395086. The cubic root of 4122256438 is about 1603.4115277852.

The spelling of 4122256438 in words is "four billion, one hundred twenty-two million, two hundred fifty-six thousand, four hundred thirty-eight".