42110310041021 has 2 divisors, whose sum is σ = 42110310041022. Its totient is φ = 42110310041020.

The previous prime is 42110310041011. The next prime is 42110310041027. The reversal of 42110310041021 is 12014001301124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35532495715396 + 6577814325625 = 5960914^2 + 2564725^2 .

It is a cyclic number.

It is not a de Polignac number, because 42110310041021 - 2¹⁴ = 42110310024637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42110310040984 and 42110310041002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42110310041027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055155020510 + 21055155020511.

It is an arithmetic number, because the mean of its divisors is an integer number (21055155020511).

Almost surely, 2^{42110310041021} is an apocalyptic number.

It is an amenable number.

42110310041021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42110310041021 is an equidigital number, since it uses as much as digits as its factorization.

42110310041021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 42110310041021 its reverse (12014001301124), we get a palindrome (54124311342145).

The spelling of 42110310041021 in words is "forty-two trillion, one hundred ten billion, three hundred ten million, forty-one thousand, twenty-one".