42120035101 has 4 divisors (see below), whose sum is σ = 42713275104. Its totient is φ = 41526795100.

The previous prime is 42120035081. The next prime is 42120035117. The reversal of 42120035101 is 10153002124.

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 42120035101 - 2⁹ = 42120034589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120035131) 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, 296619895 + ... + 296620036.

It is an arithmetic number, because the mean of its divisors is an integer number (10678318776).

Almost surely, 2^42120035101 is an apocalyptic number.

It is an amenable number.

42120035101 is a deficient number, since it is larger than the sum of its proper divisors (593240003).

42120035101 is an equidigital number, since it uses as much as digits as its factorization.

42120035101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593240002.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 42120035101 its reverse (10153002124), we get a palindrome (52273037225).

The spelling of 42120035101 in words is "forty-two billion, one hundred twenty million, thirty-five thousand, one hundred one".