42020111101 has 4 divisors (see below), whose sum is σ = 42029165952. Its totient is φ = 42011056252.

The previous prime is 42020111093. The next prime is 42020111113. The reversal of 42020111101 is 10111102024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42020111101 - 2³ = 42020111093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020111501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4520461 + ... + 4529746.

It is an arithmetic number, because the mean of its divisors is an integer number (10507291488).

Almost surely, 2^42020111101 is an apocalyptic number.

It is an amenable number.

42020111101 is a deficient number, since it is larger than the sum of its proper divisors (9054851).

42020111101 is an equidigital number, since it uses as much as digits as its factorization.

42020111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054850.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 42020111101 its reverse (10111102024), we get a palindrome (52131213125).

The spelling of 42020111101 in words is "forty-two billion, twenty million, one hundred eleven thousand, one hundred one".