42745453 has 2 divisors, whose sum is σ = 42745454. Its totient is φ = 42745452.

The previous prime is 42745433. The next prime is 42745489. The reversal of 42745453 is 35454724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42745444 + 9 = 6538^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 42745453 - 2⁹ = 42744941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42745433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21372726 + 21372727.

It is an arithmetic number, because the mean of its divisors is an integer number (21372727).

Almost surely, 2^42745453 is an apocalyptic number.

It is an amenable number.

42745453 is a deficient number, since it is larger than the sum of its proper divisors (1).

42745453 is an equidigital number, since it uses as much as digits as its factorization.

42745453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 34.

The square root of 42745453 is about 6538.0006882838. Note that the first 3 decimals coincide. The cubic root of 42745453 is about 349.6471355236.

The spelling of 42745453 in words is "forty-two million, seven hundred forty-five thousand, four hundred fifty-three".