42201240123 has 16 divisors (see below), whose sum is σ = 64332020736. Its totient is φ = 24105480960.

The previous prime is 42201240071. The next prime is 42201240139. The reversal of 42201240123 is 32104210224.

It is not a de Polignac number, because 42201240123 - 2¹³ = 42201231931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 42201240123.

It is not an unprimeable number, because it can be changed into a prime (42201240023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341718 + ... + 448523.

It is an arithmetic number, because the mean of its divisors is an integer number (4020751296).

Almost surely, 2^42201240123 is an apocalyptic number.

42201240123 is a deficient number, since it is larger than the sum of its proper divisors (22130780613).

42201240123 is a wasteful number, since it uses less digits than its factorization.

42201240123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792794.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42201240123 its reverse (32104210224), we get a palindrome (74305450347).

The spelling of 42201240123 in words is "forty-two billion, two hundred one million, two hundred forty thousand, one hundred twenty-three".