42402400440073 has 2 divisors, whose sum is σ = 42402400440074. Its totient is φ = 42402400440072.

The previous prime is 42402400440041. The next prime is 42402400440079. The reversal of 42402400440073 is 37004400420424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42256344238144 + 146056201929 = 6500488^2 + 382173^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402400440073 - 2⁵ = 42402400440041 is a prime.

It is not a weakly prime, because it can be changed into another prime (42402400440079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201200220036 + 21201200220037.

It is an arithmetic number, because the mean of its divisors is an integer number (21201200220037).

Almost surely, 2^{42402400440073} is an apocalyptic number.

It is an amenable number.

42402400440073 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402400440073 is an equidigital number, since it uses as much as digits as its factorization.

42402400440073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 34.

Adding to 42402400440073 its reverse (37004400420424), we get a palindrome (79406800860497).

The spelling of 42402400440073 in words is "forty-two trillion, four hundred two billion, four hundred million, four hundred forty thousand, seventy-three".