42748577 has 2 divisors, whose sum is σ = 42748578. Its totient is φ = 42748576.

The previous prime is 42748567. The next prime is 42748619. The reversal of 42748577 is 77584724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35153041 + 7595536 = 5929^2 + 2756^2 .

It is a cyclic number.

It is not a de Polignac number, because 42748577 - 2⁴ = 42748561 is a prime.

It is not a weakly prime, because it can be changed into another prime (42748507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21374288 + 21374289.

It is an arithmetic number, because the mean of its divisors is an integer number (21374289).

Almost surely, 2^42748577 is an apocalyptic number.

It is an amenable number.

42748577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42748577 is an equidigital number, since it uses as much as digits as its factorization.

42748577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 439040, while the sum is 44.

The square root of 42748577 is about 6538.2395948757. The cubic root of 42748577 is about 349.6556531629.

The spelling of 42748577 in words is "forty-two million, seven hundred forty-eight thousand, five hundred seventy-seven".