42521130233 has 2 divisors, whose sum is σ = 42521130234. Its totient is φ = 42521130232.

The previous prime is 42521130227. The next prime is 42521130251. The reversal of 42521130233 is 33203112524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39183410704 + 3337719529 = 197948^2 + 57773^2 .

It is a cyclic number.

It is not a de Polignac number, because 42521130233 - 2¹⁴ = 42521113849 is a prime.

It is not a weakly prime, because it can be changed into another prime (42521130263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21260565116 + 21260565117.

It is an arithmetic number, because the mean of its divisors is an integer number (21260565117).

Almost surely, 2^42521130233 is an apocalyptic number.

It is an amenable number.

42521130233 is a deficient number, since it is larger than the sum of its proper divisors (1).

42521130233 is an equidigital number, since it uses as much as digits as its factorization.

42521130233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 42521130233 its reverse (33203112524), we get a palindrome (75724242757).

The spelling of 42521130233 in words is "forty-two billion, five hundred twenty-one million, one hundred thirty thousand, two hundred thirty-three".