42005876461 has 2 divisors, whose sum is σ = 42005876462. Its totient is φ = 42005876460.

The previous prime is 42005876447. The next prime is 42005876477. The reversal of 42005876461 is 16467850024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33397562500 + 8608313961 = 182750^2 + 92781^2 .

It is a cyclic number.

It is not a de Polignac number, because 42005876461 - 2¹⁷ = 42005745389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42005876431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21002938230 + 21002938231.

It is an arithmetic number, because the mean of its divisors is an integer number (21002938231).

Almost surely, 2^42005876461 is an apocalyptic number.

It is an amenable number.

42005876461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42005876461 is an equidigital number, since it uses as much as digits as its factorization.

42005876461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 42005876461 in words is "forty-two billion, five million, eight hundred seventy-six thousand, four hundred sixty-one".