42642451061 has 8 divisors (see below), whose sum is σ = 48735994944. Its totient is φ = 36549348480.

The previous prime is 42642451057. The next prime is 42642451069. The reversal of 42642451061 is 16015424624.

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 42642451061 - 2² = 42642451057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42642451069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132326 + ... + 320616.

It is an arithmetic number, because the mean of its divisors is an integer number (6091999368).

Almost surely, 2^42642451061 is an apocalyptic number.

It is an amenable number.

42642451061 is a deficient number, since it is larger than the sum of its proper divisors (6093543883).

42642451061 is a wasteful number, since it uses less digits than its factorization.

42642451061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220651.

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 42642451061 its reverse (16015424624), we get a palindrome (58657875685).

The spelling of 42642451061 in words is "forty-two billion, six hundred forty-two million, four hundred fifty-one thousand, sixty-one".