4122638 has 8 divisors (see below), whose sum is σ = 6659688. Its totient is φ = 1902744.

The previous prime is 4122631. The next prime is 4122641. The reversal of 4122638 is 8362214.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4122638² = 33992288158088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 158563 = 4122638 / (4 + 1 + 2 + 2 + 6 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4122631) 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, 79256 + ... + 79307.

It is an arithmetic number, because the mean of its divisors is an integer number (832461).

Almost surely, 2^4122638 is an apocalyptic number.

4122638 is a deficient number, since it is larger than the sum of its proper divisors (2537050).

4122638 is a wasteful number, since it uses less digits than its factorization.

4122638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158578.

The product of its digits is 2304, while the sum is 26.

The square root of 4122638 is about 2030.4280336914. The cubic root of 4122638 is about 160.3460997620.

The spelling of 4122638 in words is "four million, one hundred twenty-two thousand, six hundred thirty-eight".