42544407 has 8 divisors (see below), whose sum is σ = 57525120. Its totient is φ = 27963320.

The previous prime is 42544393. The next prime is 42544451. The reversal of 42544407 is 70444524.

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 42544407 - 2⁶ = 42544343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544207) 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, 99657 + ... + 100082.

It is an arithmetic number, because the mean of its divisors is an integer number (7190640).

Almost surely, 2^42544407 is an apocalyptic number.

42544407 is a deficient number, since it is larger than the sum of its proper divisors (14980713).

42544407 is a wasteful number, since it uses less digits than its factorization.

42544407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199813.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 42544407 is about 6522.6073774220. The cubic root of 42544407 is about 349.0981051663.

The spelling of 42544407 in words is "forty-two million, five hundred forty-four thousand, four hundred seven".