42210945377 has 2 divisors, whose sum is σ = 42210945378. Its totient is φ = 42210945376.

The previous prime is 42210945317. The next prime is 42210945401. The reversal of 42210945377 is 77354901224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30633400576 + 11577544801 = 175024^2 + 107599^2 .

It is a cyclic number.

It is not a de Polignac number, because 42210945377 - 2¹⁴ = 42210928993 is a prime.

It is not a weakly prime, because it can be changed into another prime (42210945317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105472688 + 21105472689.

It is an arithmetic number, because the mean of its divisors is an integer number (21105472689).

Almost surely, 2^42210945377 is an apocalyptic number.

It is an amenable number.

42210945377 is a deficient number, since it is larger than the sum of its proper divisors (1).

42210945377 is an equidigital number, since it uses as much as digits as its factorization.

42210945377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 42210945377 in words is "forty-two billion, two hundred ten million, nine hundred forty-five thousand, three hundred seventy-seven".