42003215632541 has 2 divisors, whose sum is σ = 42003215632542. Its totient is φ = 42003215632540.

The previous prime is 42003215632537. The next prime is 42003215632661. The reversal of 42003215632541 is 14523651230024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32754445922500 + 9248769710041 = 5723150^2 + 3041179^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003215632541 - 2² = 42003215632537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42003215632495 and 42003215632504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003215638541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001607816270 + 21001607816271.

It is an arithmetic number, because the mean of its divisors is an integer number (21001607816271).

Almost surely, 2^{42003215632541} is an apocalyptic number.

It is an amenable number.

42003215632541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003215632541 is an equidigital number, since it uses as much as digits as its factorization.

42003215632541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 42003215632541 its reverse (14523651230024), we get a palindrome (56526866862565).

The spelling of 42003215632541 in words is "forty-two trillion, three billion, two hundred fifteen million, six hundred thirty-two thousand, five hundred forty-one".