42342577 has 2 divisors, whose sum is σ = 42342578. Its totient is φ = 42342576.

The previous prime is 42342539. The next prime is 42342611. The reversal of 42342577 is 77524324.

It is an a-pointer prime, because the next prime (42342611) can be obtained adding 42342577 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 11861136 = 5521^2 + 3444^2 .

It is a cyclic number.

It is not a de Polignac number, because 42342577 - 2⁷ = 42342449 is a prime.

It is not a weakly prime, because it can be changed into another prime (42342277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171288 + 21171289.

It is an arithmetic number, because the mean of its divisors is an integer number (21171289).

Almost surely, 2^42342577 is an apocalyptic number.

It is an amenable number.

42342577 is a deficient number, since it is larger than the sum of its proper divisors (1).

42342577 is an equidigital number, since it uses as much as digits as its factorization.

42342577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 34.

The square root of 42342577 is about 6507.1174109586. The cubic root of 42342577 is about 348.5451912576.

The spelling of 42342577 in words is "forty-two million, three hundred forty-two thousand, five hundred seventy-seven".