42247236561 has 16 divisors (see below), whose sum is σ = 56525220864. Its totient is φ = 28067174784.

The previous prime is 42247236541. The next prime is 42247236599. The reversal of 42247236561 is 16563274224.

42247236561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42247236561 - 2⁹ = 42247236049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42247236541) 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, 1278301 + ... + 1310933.

It is an arithmetic number, because the mean of its divisors is an integer number (3532826304).

Almost surely, 2^42247236561 is an apocalyptic number.

It is an amenable number.

42247236561 is a deficient number, since it is larger than the sum of its proper divisors (14277984303).

42247236561 is a wasteful number, since it uses less digits than its factorization.

42247236561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34120.

The product of its digits is 483840, while the sum is 42.

The spelling of 42247236561 in words is "forty-two billion, two hundred forty-seven million, two hundred thirty-six thousand, five hundred sixty-one".