42440906 has 8 divisors (see below), whose sum is σ = 65016000. Its totient is φ = 20768908.

The previous prime is 42440899. The next prime is 42440917. The reversal of 42440906 is 60904424.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225656 + ... + 225843.

It is an arithmetic number, because the mean of its divisors is an integer number (8127000).

Almost surely, 2^42440906 is an apocalyptic number.

42440906 is a deficient number, since it is larger than the sum of its proper divisors (22575094).

42440906 is a wasteful number, since it uses less digits than its factorization.

42440906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451548.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42440906 is about 6514.6685257195. The cubic root of 42440906 is about 348.8147828250.

The spelling of 42440906 in words is "forty-two million, four hundred forty thousand, nine hundred six".