40442515 has 8 divisors (see below), whose sum is σ = 48913920. Its totient is φ = 32098752.

The previous prime is 40442491. The next prime is 40442561. The reversal of 40442515 is 51524404.

It is a happy number.

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 40442515 - 2⁵ = 40442483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40442515.

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, 31210 + ... + 32479.

It is an arithmetic number, because the mean of its divisors is an integer number (6114240).

Almost surely, 2^40442515 is an apocalyptic number.

40442515 is a deficient number, since it is larger than the sum of its proper divisors (8471405).

40442515 is a wasteful number, since it uses less digits than its factorization.

40442515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63821.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40442515 is about 6359.4429787521. The cubic root of 40442515 is about 343.2517170711.

Adding to 40442515 its reverse (51524404), we get a palindrome (91966919).

The spelling of 40442515 in words is "forty million, four hundred forty-two thousand, five hundred fifteen".