42004851 has 32 divisors (see below), whose sum is σ = 66114048. Its totient is φ = 23224320.

The previous prime is 42004843. The next prime is 42004861. The reversal of 42004851 is 15840024.

It is not a de Polignac number, because 42004851 - 2³ = 42004843 is a prime.

42004851 is a modest number, since divided by 4851 gives 42 as remainder.

It is not an unprimeable number, because it can be changed into a prime (42004861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163315 + ... + 163571.

It is an arithmetic number, because the mean of its divisors is an integer number (2066064).

Almost surely, 2^42004851 is an apocalyptic number.

42004851 is a deficient number, since it is larger than the sum of its proper divisors (24109197).

42004851 is a wasteful number, since it uses less digits than its factorization.

42004851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 42004851 is about 6481.1149503770. The cubic root of 42004851 is about 347.6160466760.

Adding to 42004851 its reverse (15840024), we get a palindrome (57844875).

The spelling of 42004851 in words is "forty-two million, four thousand, eight hundred fifty-one".