42615161 has 2 divisors, whose sum is σ = 42615162. Its totient is φ = 42615160.

The previous prime is 42615143. The next prime is 42615179. The reversal of 42615161 is 16151624.

It is a balanced prime because it is at equal distance from previous prime (42615143) and next prime (42615179).

It can be written as a sum of positive squares in only one way, i.e., 29365561 + 13249600 = 5419^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 42615161 - 2²² = 38420857 is a prime.

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 42615161.

It is not a weakly prime, because it can be changed into another prime (42615121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21307580 + 21307581.

It is an arithmetic number, because the mean of its divisors is an integer number (21307581).

Almost surely, 2^42615161 is an apocalyptic number.

It is an amenable number.

42615161 is a deficient number, since it is larger than the sum of its proper divisors (1).

42615161 is an equidigital number, since it uses as much as digits as its factorization.

42615161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 42615161 is about 6528.0288755489. The cubic root of 42615161 is about 349.2915219521.

Adding to 42615161 its reverse (16151624), we get a palindrome (58766785).

The spelling of 42615161 in words is "forty-two million, six hundred fifteen thousand, one hundred sixty-one".