42451385 has 16 divisors (see below), whose sum is σ = 52202880. Its totient is φ = 33129600.

The previous prime is 42451373. The next prime is 42451393. The reversal of 42451385 is 58315424.

42451385 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 42451385 - 2¹⁰ = 42450361 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 44069 + ... + 45021.

It is an arithmetic number, because the mean of its divisors is an integer number (3262680).

Almost surely, 2^42451385 is an apocalyptic number.

It is an amenable number.

42451385 is a deficient number, since it is larger than the sum of its proper divisors (9751495).

42451385 is a wasteful number, since it uses less digits than its factorization.

42451385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 19200, while the sum is 32.

The square root of 42451385 is about 6515.4727380291. The cubic root of 42451385 is about 348.8434888515.

The spelling of 42451385 in words is "forty-two million, four hundred fifty-one thousand, three hundred eighty-five".