42511310121 has 8 divisors (see below), whose sum is σ = 64779139264. Its totient is φ = 24292177200.

The previous prime is 42511310119. The next prime is 42511310131. The reversal of 42511310121 is 12101311524.

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

It is not a de Polignac number, because 42511310121 - 2¹ = 42511310119 is a prime.

It is a super-2 number, since 2×42511310121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2024348101 = 42511310121 / (4 + 2 + 5 + 1 + 1 + 3 + 1 + 0 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (42511310131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012174030 + ... + 1012174071.

It is an arithmetic number, because the mean of its divisors is an integer number (8097392408).

Almost surely, 2^42511310121 is an apocalyptic number.

It is an amenable number.

42511310121 is a deficient number, since it is larger than the sum of its proper divisors (22267829143).

42511310121 is a wasteful number, since it uses less digits than its factorization.

42511310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024348111.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 42511310121 its reverse (12101311524), we get a palindrome (54612621645).

The spelling of 42511310121 in words is "forty-two billion, five hundred eleven million, three hundred ten thousand, one hundred twenty-one".