42144049 has 4 divisors (see below), whose sum is σ = 42185200. Its totient is φ = 42102900.

The previous prime is 42144041. The next prime is 42144079. The reversal of 42144049 is 94044124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42144049 - 2³ = 42144041 is a prime.

It is a super-2 number, since 2×42144049² = 3552241732228802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42144041) 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, 18999 + ... + 21100.

It is an arithmetic number, because the mean of its divisors is an integer number (10546300).

Almost surely, 2^42144049 is an apocalyptic number.

It is an amenable number.

42144049 is a deficient number, since it is larger than the sum of its proper divisors (41151).

42144049 is a wasteful number, since it uses less digits than its factorization.

42144049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41150.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 42144049 is about 6491.8448071407. The cubic root of 42144049 is about 347.9996063985. Note that the first 3 decimals are identical.

The spelling of 42144049 in words is "forty-two million, one hundred forty-four thousand, forty-nine".