42013811 has 12 divisors (see below), whose sum is σ = 48846096. Its totient is φ = 35399520.

The previous prime is 42013799. The next prime is 42013813. The reversal of 42013811 is 11831024.

It is not a de Polignac number, because 42013811 - 2⁶ = 42013747 is a prime.

It is a super-3 number, since 3×42013811³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25241 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (4070508).

Almost surely, 2^42013811 is an apocalyptic number.

42013811 is a deficient number, since it is larger than the sum of its proper divisors (6832285).

42013811 is an equidigital number, since it uses as much as digits as its factorization.

42013811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 42013811 is about 6481.8061526090. The cubic root of 42013811 is about 347.6407614274.

Adding to 42013811 its reverse (11831024), we get a palindrome (53844835).

It can be divided in two parts, 42013 and 811, that added together give a palindrome (42824).

The spelling of 42013811 in words is "forty-two million, thirteen thousand, eight hundred eleven".