42440667 has 8 divisors (see below), whose sum is σ = 57363024. Its totient is φ = 27906048.

The previous prime is 42440641. The next prime is 42440669. The reversal of 42440667 is 76604424.

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

It is not a de Polignac number, because 42440667 - 2⁷ = 42440539 is a prime.

It is a super-3 number, since 3×42440667³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42440669) 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, 96678 + ... + 97115.

It is an arithmetic number, because the mean of its divisors is an integer number (7170378).

Almost surely, 2^42440667 is an apocalyptic number.

42440667 is a deficient number, since it is larger than the sum of its proper divisors (14922357).

42440667 is a wasteful number, since it uses less digits than its factorization.

42440667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193869.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 42440667 is about 6514.6501824733. The cubic root of 42440667 is about 348.8141280566.

The spelling of 42440667 in words is "forty-two million, four hundred forty thousand, six hundred sixty-seven".