42144413 has 4 divisors (see below), whose sum is σ = 44362560. Its totient is φ = 39926268.

The previous prime is 42144409. The next prime is 42144457. The reversal of 42144413 is 31444124.

It is a happy number.

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 42144413 - 2² = 42144409 is a prime.

It is a super-2 number, since 2×42144413² = 3552303094229138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109045 + ... + 1109082.

It is an arithmetic number, because the mean of its divisors is an integer number (11090640).

Almost surely, 2^42144413 is an apocalyptic number.

It is an amenable number.

42144413 is a deficient number, since it is larger than the sum of its proper divisors (2218147).

42144413 is a wasteful number, since it uses less digits than its factorization.

42144413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218146.

The product of its digits is 1536, while the sum is 23.

The square root of 42144413 is about 6491.8728422544. The cubic root of 42144413 is about 348.0006082915. Note that the first 3 decimals are identical.

Adding to 42144413 its reverse (31444124), we get a palindrome (73588537).

The spelling of 42144413 in words is "forty-two million, one hundred forty-four thousand, four hundred thirteen".