42342761 has 2 divisors, whose sum is σ = 42342762. Its totient is φ = 42342760.

The previous prime is 42342757. The next prime is 42342799. The reversal of 42342761 is 16724324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33131536 + 9211225 = 5756^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 42342761 - 2² = 42342757 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42342721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21171380 + 21171381.

It is an arithmetic number, because the mean of its divisors is an integer number (21171381).

Almost surely, 2^42342761 is an apocalyptic number.

It is an amenable number.

42342761 is a deficient number, since it is larger than the sum of its proper divisors (1).

42342761 is an equidigital number, since it uses as much as digits as its factorization.

42342761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 42342761 is about 6507.1315493080. The cubic root of 42342761 is about 348.5456961255.

The spelling of 42342761 in words is "forty-two million, three hundred forty-two thousand, seven hundred sixty-one".