42162641 has 2 divisors, whose sum is σ = 42162642. Its totient is φ = 42162640.

The previous prime is 42162563. The next prime is 42162643. The reversal of 42162641 is 14626124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41667025 + 495616 = 6455^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 42162641 - 2¹⁰ = 42161617 is a prime.

Together with 42162643, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42162641.

It is not a weakly prime, because it can be changed into another prime (42162643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21081320 + 21081321.

It is an arithmetic number, because the mean of its divisors is an integer number (21081321).

Almost surely, 2^42162641 is an apocalyptic number.

It is an amenable number.

42162641 is a deficient number, since it is larger than the sum of its proper divisors (1).

42162641 is an equidigital number, since it uses as much as digits as its factorization.

42162641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 42162641 is about 6493.2765996837. The cubic root of 42162641 is about 348.0507726378.

Adding to 42162641 its reverse (14626124), we get a palindrome (56788765).

The spelling of 42162641 in words is "forty-two million, one hundred sixty-two thousand, six hundred forty-one".