42667121437 has 2 divisors, whose sum is σ = 42667121438. Its totient is φ = 42667121436.

The previous prime is 42667121417. The next prime is 42667121473. The reversal of 42667121437 is 73412176624.

Together with next prime (42667121473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35474215716 + 7192905721 = 188346^2 + 84811^2 .

It is a cyclic number.

It is not a de Polignac number, because 42667121437 - 2¹¹ = 42667119389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42667121393 and 42667121402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42667121417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21333560718 + 21333560719.

It is an arithmetic number, because the mean of its divisors is an integer number (21333560719).

Almost surely, 2^42667121437 is an apocalyptic number.

It is an amenable number.

42667121437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42667121437 is an equidigital number, since it uses as much as digits as its factorization.

42667121437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 43.

The spelling of 42667121437 in words is "forty-two billion, six hundred sixty-seven million, one hundred twenty-one thousand, four hundred thirty-seven".