42369905 has 16 divisors (see below), whose sum is σ = 53680320. Its totient is φ = 32015808.

The previous prime is 42369893. The next prime is 42369907. The reversal of 42369905 is 50996324.

It is a cyclic number.

It is not a de Polignac number, because 42369905 - 2¹⁶ = 42304369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42369907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61694 + ... + 62376.

It is an arithmetic number, because the mean of its divisors is an integer number (3355020).

Almost surely, 2^42369905 is an apocalyptic number.

It is an amenable number.

42369905 is a deficient number, since it is larger than the sum of its proper divisors (11310415).

42369905 is a wasteful number, since it uses less digits than its factorization.

42369905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 42369905 is about 6509.2169267893. The cubic root of 42369905 is about 348.6201590971.

It can be divided in two parts, 4236 and 9905, that added together give a palindrome (14141).

The spelling of 42369905 in words is "forty-two million, three hundred sixty-nine thousand, nine hundred five".