42746513 has 2 divisors, whose sum is σ = 42746514. Its totient is φ = 42746512.

The previous prime is 42746497. The next prime is 42746519. The reversal of 42746513 is 31564724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 976144 = 6463^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 42746513 - 2⁴ = 42746497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42746513.

It is not a weakly prime, because it can be changed into another prime (42746519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21373256 + 21373257.

It is an arithmetic number, because the mean of its divisors is an integer number (21373257).

Almost surely, 2^42746513 is an apocalyptic number.

It is an amenable number.

42746513 is a deficient number, since it is larger than the sum of its proper divisors (1).

42746513 is an equidigital number, since it uses as much as digits as its factorization.

42746513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 42746513 is about 6538.0817523185. The cubic root of 42746513 is about 349.6500256782.

The spelling of 42746513 in words is "forty-two million, seven hundred forty-six thousand, five hundred thirteen".