42212132789 has 2 divisors, whose sum is σ = 42212132790. Its totient is φ = 42212132788.

The previous prime is 42212132777. The next prime is 42212132849. The reversal of 42212132789 is 98723121224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39892072900 + 2320059889 = 199730^2 + 48167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42212132789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42212132749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106066394 + 21106066395.

It is an arithmetic number, because the mean of its divisors is an integer number (21106066395).

Almost surely, 2^42212132789 is an apocalyptic number.

It is an amenable number.

42212132789 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212132789 is an equidigital number, since it uses as much as digits as its factorization.

42212132789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The spelling of 42212132789 in words is "forty-two billion, two hundred twelve million, one hundred thirty-two thousand, seven hundred eighty-nine".