42144045 has 8 divisors (see below), whose sum is σ = 67430496. Its totient is φ = 22476816.

The previous prime is 42144041. The next prime is 42144079. The reversal of 42144045 is 54044124.

It is a happy number.

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

It is not a de Polignac number, because 42144045 - 2² = 42144041 is a prime.

It is a super-2 number, since 2×42144045² = 3552241057924050, which contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1404787 + ... + 1404816.

It is an arithmetic number, because the mean of its divisors is an integer number (8428812).

Almost surely, 2^42144045 is an apocalyptic number.

It is an amenable number.

42144045 is a deficient number, since it is larger than the sum of its proper divisors (25286451).

42144045 is a wasteful number, since it uses less digits than its factorization.

42144045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809611.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 42144045 is about 6491.8444990619. The cubic root of 42144045 is about 347.9995953886. Note that the first 3 decimals are identical.

Adding to 42144045 its reverse (54044124), we get a palindrome (96188169).

The spelling of 42144045 in words is "forty-two million, one hundred forty-four thousand, forty-five".