42044387 has 8 divisors (see below), whose sum is σ = 52419072. Its totient is φ = 32761800.

The previous prime is 42044377. The next prime is 42044389. The reversal of 42044387 is 78344024.

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

It is a cyclic number.

It is not a de Polignac number, because 42044387 - 2⁴ = 42044371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42044389) 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, 272939 + ... + 273092.

It is an arithmetic number, because the mean of its divisors is an integer number (6552384).

Almost surely, 2^42044387 is an apocalyptic number.

42044387 is a deficient number, since it is larger than the sum of its proper divisors (10374685).

42044387 is a wasteful number, since it uses less digits than its factorization.

42044387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546049.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 42044387 is about 6484.1643254933. The cubic root of 42044387 is about 347.7250740708.

The spelling of 42044387 in words is "forty-two million, forty-four thousand, three hundred eighty-seven".