42905863 has 16 divisors (see below), whose sum is σ = 57609216. Its totient is φ = 30860640.

The previous prime is 42905861. The next prime is 42905867. The reversal of 42905863 is 36850924.

It is a cyclic number.

It is not a de Polignac number, because 42905863 - 2¹ = 42905861 is a prime.

42905863 is a modest number, since divided by 5863 gives 429 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42905861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20431 + ... + 22432.

It is an arithmetic number, because the mean of its divisors is an integer number (3600576).

Almost surely, 2^42905863 is an apocalyptic number.

42905863 is a deficient number, since it is larger than the sum of its proper divisors (14703353).

42905863 is a wasteful number, since it uses less digits than its factorization.

42905863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42894.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 42905863 is about 6550.2567125266. The cubic root of 42905863 is about 350.0839608096.

It can be divided in two parts, 4290 and 5863, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 42905863 in words is "forty-two million, nine hundred five thousand, eight hundred sixty-three".