42031061121 has 8 divisors (see below), whose sum is σ = 64047331264. Its totient is φ = 24017749200.

The previous prime is 42031061119. The next prime is 42031061123. The reversal of 42031061121 is 12116013024.

It is an interprime number because it is at equal distance from previous prime (42031061119) and next prime (42031061123).

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

It is not a de Polignac number, because 42031061121 - 2¹ = 42031061119 is a prime.

It is a super-2 number, since 2×42031061121² (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: 2001479101 = 42031061121 / (4 + 2 + 0 + 3 + 1 + 0 + 6 + 1 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (42031061123) 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, 1000739530 + ... + 1000739571.

It is an arithmetic number, because the mean of its divisors is an integer number (8005916408).

Almost surely, 2^42031061121 is an apocalyptic number.

It is an amenable number.

42031061121 is a deficient number, since it is larger than the sum of its proper divisors (22016270143).

42031061121 is a wasteful number, since it uses less digits than its factorization.

42031061121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001479111.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 42031061121 its reverse (12116013024), we get a palindrome (54147074145).

The spelling of 42031061121 in words is "forty-two billion, thirty-one million, sixty-one thousand, one hundred twenty-one".