40542105 has 24 divisors (see below), whose sum is σ = 68470272. Its totient is φ = 20481696.

The previous prime is 40542101. The next prime is 40542119. The reversal of 40542105 is 50124504.

It is not a de Polignac number, because 40542105 - 2² = 40542101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40542101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1672 + ... + 9158.

It is an arithmetic number, because the mean of its divisors is an integer number (2852928).

Almost surely, 2^40542105 is an apocalyptic number.

It is an amenable number.

40542105 is a deficient number, since it is larger than the sum of its proper divisors (27928167).

40542105 is a wasteful number, since it uses less digits than its factorization.

40542105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533 (or 7514 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40542105 is about 6367.2682525554. The cubic root of 40542105 is about 343.5332394328.

Adding to 40542105 its reverse (50124504), we get a palindrome (90666609).

The spelling of 40542105 in words is "forty million, five hundred forty-two thousand, one hundred five".