42212205157 has 2 divisors, whose sum is σ = 42212205158. Its totient is φ = 42212205156.

The previous prime is 42212205121. The next prime is 42212205173. The reversal of 42212205157 is 75150221224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32844675361 + 9367529796 = 181231^2 + 96786^2 .

It is a cyclic number.

It is not a de Polignac number, because 42212205157 - 2¹⁹ = 42211680869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42212205107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106102578 + 21106102579.

It is an arithmetic number, because the mean of its divisors is an integer number (21106102579).

Almost surely, 2^42212205157 is an apocalyptic number.

It is an amenable number.

42212205157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212205157 is an equidigital number, since it uses as much as digits as its factorization.

42212205157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The spelling of 42212205157 in words is "forty-two billion, two hundred twelve million, two hundred five thousand, one hundred fifty-seven".