42006124621 has 8 divisors (see below), whose sum is σ = 42516714240. Its totient is φ = 41495642112.

The previous prime is 42006124613. The next prime is 42006124627. The reversal of 42006124621 is 12642160024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42006124621 - 2³ = 42006124613 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 42006124621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42006124627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999396 + ... + 1040578.

It is an arithmetic number, because the mean of its divisors is an integer number (5314589280).

Almost surely, 2^42006124621 is an apocalyptic number.

It is an amenable number.

42006124621 is a deficient number, since it is larger than the sum of its proper divisors (510589619).

42006124621 is a wasteful number, since it uses less digits than its factorization.

42006124621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53555.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 42006124621 its reverse (12642160024), we get a palindrome (54648284645).

The spelling of 42006124621 in words is "forty-two billion, six million, one hundred twenty-four thousand, six hundred twenty-one".