42203477 has 2 divisors, whose sum is σ = 42203478. Its totient is φ = 42203476.

The previous prime is 42203461. The next prime is 42203479. The reversal of 42203477 is 77430224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 9186961 = 5746^2 + 3031^2 .

It is a cyclic number.

It is not a de Polignac number, because 42203477 - 2⁴ = 42203461 is a prime.

It is a super-2 number, since 2×42203477² = 3562266941779058, which contains 22 as substring.

Together with 42203479, 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 (42203479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101738 + 21101739.

It is an arithmetic number, because the mean of its divisors is an integer number (21101739).

Almost surely, 2^42203477 is an apocalyptic number.

It is an amenable number.

42203477 is a deficient number, since it is larger than the sum of its proper divisors (1).

42203477 is an equidigital number, since it uses as much as digits as its factorization.

42203477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 42203477 is about 6496.4203219927. The cubic root of 42203477 is about 348.1631028499.

The spelling of 42203477 in words is "forty-two million, two hundred three thousand, four hundred seventy-seven".