42144111 has 8 divisors (see below), whose sum is σ = 62435760. Its totient is φ = 28096056.

The previous prime is 42144103. The next prime is 42144121. The reversal of 42144111 is 11144124.

It is not a de Polignac number, because 42144111 - 2³ = 42144103 is a prime.

It is a super-2 number, since 2×42144111² = 3552252183960642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780420 + ... + 780473.

It is an arithmetic number, because the mean of its divisors is an integer number (7804470).

Almost surely, 2^42144111 is an apocalyptic number.

42144111 is a deficient number, since it is larger than the sum of its proper divisors (20291649).

42144111 is a wasteful number, since it uses less digits than its factorization.

42144111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560902 (or 1560896 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 42144111 is about 6491.8495823609. The cubic root of 42144111 is about 347.9997770510. Note that the first 3 decimals are identical.

Adding to 42144111 its reverse (11144124), we get a palindrome (53288235).

The spelling of 42144111 in words is "forty-two million, one hundred forty-four thousand, one hundred eleven".