40442555 has 8 divisors (see below), whose sum is σ = 48565872. Its totient is φ = 32330848.

The previous prime is 40442491. The next prime is 40442561. The reversal of 40442555 is 55524404.

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 40442555 - 2⁶ = 40442491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9932 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (6070734).

Almost surely, 2^40442555 is an apocalyptic number.

40442555 is a deficient number, since it is larger than the sum of its proper divisors (8123317).

40442555 is a wasteful number, since it uses less digits than its factorization.

40442555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 40442555 is about 6359.4461236809. The cubic root of 40442555 is about 343.2518302363.

Adding to 40442555 its reverse (55524404), we get a palindrome (95966959).

The spelling of 40442555 in words is "forty million, four hundred forty-two thousand, five hundred fifty-five".