42606220457 has 2 divisors, whose sum is σ = 42606220458. Its totient is φ = 42606220456.

The previous prime is 42606220453. The next prime is 42606220499. The reversal of 42606220457 is 75402260624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42599308816 + 6911641 = 206396^2 + 2629^2 .

It is a cyclic number.

It is not a de Polignac number, because 42606220457 - 2² = 42606220453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42606220457.

It is not a weakly prime, because it can be changed into another prime (42606220453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21303110228 + 21303110229.

It is an arithmetic number, because the mean of its divisors is an integer number (21303110229).

Almost surely, 2^42606220457 is an apocalyptic number.

It is an amenable number.

42606220457 is a deficient number, since it is larger than the sum of its proper divisors (1).

42606220457 is an equidigital number, since it uses as much as digits as its factorization.

42606220457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 42606220457 in words is "forty-two billion, six hundred six million, two hundred twenty thousand, four hundred fifty-seven".