42133453 has 2 divisors, whose sum is σ = 42133454. Its totient is φ = 42133452.

The previous prime is 42133451. The next prime is 42133477. The reversal of 42133453 is 35433124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41822089 + 311364 = 6467^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 42133453 - 2¹ = 42133451 is a prime.

Together with 42133451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42133451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21066726 + 21066727.

It is an arithmetic number, because the mean of its divisors is an integer number (21066727).

Almost surely, 2^42133453 is an apocalyptic number.

It is an amenable number.

42133453 is a deficient number, since it is larger than the sum of its proper divisors (1).

42133453 is an equidigital number, since it uses as much as digits as its factorization.

42133453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 25.

The square root of 42133453 is about 6491.0286549976. The cubic root of 42133453 is about 347.9704388727.

Adding to 42133453 its reverse (35433124), we get a palindrome (77566577).

The spelling of 42133453 in words is "forty-two million, one hundred thirty-three thousand, four hundred fifty-three".