42020232101 has 4 divisors (see below), whose sum is σ = 42023236704. Its totient is φ = 42017227500.

The previous prime is 42020232091. The next prime is 42020232119. The reversal of 42020232101 is 10123202024.

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 a de Polignac number, because none of the positive numbers 2^k-42020232101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42020232101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020232301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1481225 + ... + 1509326.

It is an arithmetic number, because the mean of its divisors is an integer number (10505809176).

Almost surely, 2^42020232101 is an apocalyptic number.

It is an amenable number.

42020232101 is a deficient number, since it is larger than the sum of its proper divisors (3004603).

42020232101 is a wasteful number, since it uses less digits than its factorization.

42020232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004602.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 42020232101 its reverse (10123202024), we get a palindrome (52143434125).

The spelling of 42020232101 in words is "forty-two billion, twenty million, two hundred thirty-two thousand, one hundred one".