42305477 has 2 divisors, whose sum is σ = 42305478. Its totient is φ = 42305476.

The previous prime is 42305449. The next prime is 42305479. The reversal of 42305477 is 77450324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28718881 + 13586596 = 5359^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 42305477 - 2¹⁰ = 42304453 is a prime.

Together with 42305479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42305479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21152738 + 21152739.

It is an arithmetic number, because the mean of its divisors is an integer number (21152739).

Almost surely, 2^42305477 is an apocalyptic number.

It is an amenable number.

42305477 is a deficient number, since it is larger than the sum of its proper divisors (1).

42305477 is an equidigital number, since it uses as much as digits as its factorization.

42305477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 42305477 is about 6504.2660615937. The cubic root of 42305477 is about 348.4433646328.

The spelling of 42305477 in words is "forty-two million, three hundred five thousand, four hundred seventy-seven".