40442307 has 8 divisors (see below), whose sum is σ = 54479376. Its totient is φ = 26683392.

The previous prime is 40442273. The next prime is 40442323. The reversal of 40442307 is 70324404.

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

It is not a de Polignac number, because 40442307 - 2⁶ = 40442243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40442357) 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, 69198 + ... + 69779.

It is an arithmetic number, because the mean of its divisors is an integer number (6809922).

Almost surely, 2^40442307 is an apocalyptic number.

40442307 is a deficient number, since it is larger than the sum of its proper divisors (14037069).

40442307 is a wasteful number, since it uses less digits than its factorization.

40442307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139077.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 40442307 is about 6359.4266250976. The cubic root of 40442307 is about 343.2511286105.

The spelling of 40442307 in words is "forty million, four hundred forty-two thousand, three hundred seven".