42544437 has 8 divisors (see below), whose sum is σ = 61089504. Its totient is φ = 26181168.

The previous prime is 42544393. The next prime is 42544451. The reversal of 42544437 is 73444524.

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

It is not a de Polignac number, because 42544437 - 2⁶ = 42544373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42544398 and 42544407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544237) 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, 545403 + ... + 545480.

It is an arithmetic number, because the mean of its divisors is an integer number (7636188).

Almost surely, 2^42544437 is an apocalyptic number.

It is an amenable number.

42544437 is a deficient number, since it is larger than the sum of its proper divisors (18545067).

42544437 is a wasteful number, since it uses less digits than its factorization.

42544437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090899.

The product of its digits is 53760, while the sum is 33.

The square root of 42544437 is about 6522.6096771154. The cubic root of 42544437 is about 349.0981872213.

The spelling of 42544437 in words is "forty-two million, five hundred forty-four thousand, four hundred thirty-seven".