42421414157 has 2 divisors, whose sum is σ = 42421414158. Its totient is φ = 42421414156.

The previous prime is 42421414111. The next prime is 42421414163. The reversal of 42421414157 is 75141412424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41232957481 + 1188456676 = 203059^2 + 34474^2 .

It is a cyclic number.

It is not a de Polignac number, because 42421414157 - 2⁸ = 42421413901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42421414177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210707078 + 21210707079.

It is an arithmetic number, because the mean of its divisors is an integer number (21210707079).

Almost surely, 2^42421414157 is an apocalyptic number.

It is an amenable number.

42421414157 is a deficient number, since it is larger than the sum of its proper divisors (1).

42421414157 is an equidigital number, since it uses as much as digits as its factorization.

42421414157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 35.

The spelling of 42421414157 in words is "forty-two billion, four hundred twenty-one million, four hundred fourteen thousand, one hundred fifty-seven".