42003421011 has 12 divisors (see below), whose sum is σ = 63864850920. Its totient is φ = 26528476320.

The previous prime is 42003420989. The next prime is 42003421013. The reversal of 42003421011 is 11012430024.

42003421011 is a `hidden beast` number, since 420 + 0 + 34 + 210 + 1 + 1 = 666.

It is not a de Polignac number, because 42003421011 - 2⁶ = 42003420947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42003421013) 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, 122816850 + ... + 122817191.

It is an arithmetic number, because the mean of its divisors is an integer number (5322070910).

Almost surely, 2^42003421011 is an apocalyptic number.

42003421011 is a deficient number, since it is larger than the sum of its proper divisors (21861429909).

42003421011 is a wasteful number, since it uses less digits than its factorization.

42003421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245634066 (or 245634063 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 42003421011 its reverse (11012430024), we get a palindrome (53015851035).

The spelling of 42003421011 in words is "forty-two billion, three million, four hundred twenty-one thousand, eleven".