42122441 has 4 divisors (see below), whose sum is σ = 42279300. Its totient is φ = 41965584.

The previous prime is 42122429. The next prime is 42122461. The reversal of 42122441 is 14422124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19360000 + 22762441 = 4400^2 + 4771^2 .

It is a cyclic number.

It is not a de Polignac number, because 42122441 - 2¹⁸ = 41860297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42122461) 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, 78026 + ... + 78563.

It is an arithmetic number, because the mean of its divisors is an integer number (10569825).

Almost surely, 2^42122441 is an apocalyptic number.

It is an amenable number.

42122441 is a deficient number, since it is larger than the sum of its proper divisors (156859).

42122441 is a wasteful number, since it uses less digits than its factorization.

42122441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156858.

The product of its digits is 512, while the sum is 20.

The square root of 42122441 is about 6490.1803518855. The cubic root of 42122441 is about 347.9401210446.

Adding to 42122441 its reverse (14422124), we get a palindrome (56544565).

The spelling of 42122441 in words is "forty-two million, one hundred twenty-two thousand, four hundred forty-one".