42512454461 has 2 divisors, whose sum is σ = 42512454462. Its totient is φ = 42512454460.

The previous prime is 42512454437. The next prime is 42512454473. The reversal of 42512454461 is 16445421524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39533368900 + 2979085561 = 198830^2 + 54581^2 .

It is a cyclic number.

It is not a de Polignac number, because 42512454461 - 2¹⁴ = 42512438077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42512454401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256227230 + 21256227231.

It is an arithmetic number, because the mean of its divisors is an integer number (21256227231).

Almost surely, 2^42512454461 is an apocalyptic number.

It is an amenable number.

42512454461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42512454461 is an equidigital number, since it uses as much as digits as its factorization.

42512454461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153600, while the sum is 38.

Adding to 42512454461 its reverse (16445421524), we get a palindrome (58957875985).

The spelling of 42512454461 in words is "forty-two billion, five hundred twelve million, four hundred fifty-four thousand, four hundred sixty-one".