42449895 has 48 divisors (see below), whose sum is σ = 78249600. Its totient is φ = 21228480.

The previous prime is 42449893. The next prime is 42449899. The reversal of 42449895 is 59894424.

It is not a de Polignac number, because 42449895 - 2¹ = 42449893 is a prime.

It is a super-2 number, since 2×42449895² = 3603987171022050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (414720) is a multiple of the sum of its prime factors (540).

It is a self number, because there is not a number n which added to its sum of digits gives 42449895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42449893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111816 + ... + 112194.

It is an arithmetic number, because the mean of its divisors is an integer number (1630200).

Almost surely, 2^42449895 is an apocalyptic number.

42449895 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42449895 is a deficient number, since it is larger than the sum of its proper divisors (35799705).

42449895 is a wasteful number, since it uses less digits than its factorization.

42449895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 537 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 42449895 is about 6515.3583938261. The cubic root of 42449895 is about 348.8394074544.

The spelling of 42449895 in words is "forty-two million, four hundred forty-nine thousand, eight hundred ninety-five".