42912369 has 16 divisors (see below), whose sum is σ = 67314240. Its totient is φ = 26925120.

The previous prime is 42912367. The next prime is 42912377. The reversal of 42912369 is 96321924.

42912369 is a `hidden beast` number, since 4 + 291 + 2 + 369 = 666.

42912369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42912369 - 2¹ = 42912367 is a prime.

It is a super-2 number, since 2×42912369² = 3682942826384322, which contains 22 as substring.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (42912367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46287 + ... + 47204.

It is an arithmetic number, because the mean of its divisors is an integer number (4207140).

Almost surely, 2^42912369 is an apocalyptic number.

It is an amenable number.

42912369 is a deficient number, since it is larger than the sum of its proper divisors (24401871).

42912369 is a wasteful number, since it uses less digits than its factorization.

42912369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93517 (or 93511 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 42912369 is about 6550.7533154592. The cubic root of 42912369 is about 350.1016548260.

The spelling of 42912369 in words is "forty-two million, nine hundred twelve thousand, three hundred sixty-nine".