42521153 has 2 divisors, whose sum is σ = 42521154. Its totient is φ = 42521152.

The previous prime is 42521117. The next prime is 42521161. The reversal of 42521153 is 35112524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40538689 + 1982464 = 6367^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 42521153 - 2¹⁰ = 42520129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42521653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21260576 + 21260577.

It is an arithmetic number, because the mean of its divisors is an integer number (21260577).

Almost surely, 2^42521153 is an apocalyptic number.

It is an amenable number.

42521153 is a deficient number, since it is larger than the sum of its proper divisors (1).

42521153 is an equidigital number, since it uses as much as digits as its factorization.

42521153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 42521153 is about 6520.8245644243. The cubic root of 42521153 is about 349.0344900137.

Adding to 42521153 its reverse (35112524), we get a palindrome (77633677).

The spelling of 42521153 in words is "forty-two million, five hundred twenty-one thousand, one hundred fifty-three".