42203479 has 2 divisors, whose sum is σ = 42203480. Its totient is φ = 42203478.

The previous prime is 42203477. The next prime is 42203527. The reversal of 42203479 is 97430224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42203479 - 2¹ = 42203477 is a prime.

It is a super-2 number, since 2×42203479² = 3562267279406882, which contains 22 as substring.

Together with 42203477, it forms a pair of twin primes.

It is equal to p_2559235 and since 42203479 and 2559235 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42203479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42203477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101739 + 21101740.

It is an arithmetic number, because the mean of its divisors is an integer number (21101740).

Almost surely, 2^42203479 is an apocalyptic number.

42203479 is a deficient number, since it is larger than the sum of its proper divisors (1).

42203479 is an equidigital number, since it uses as much as digits as its factorization.

42203479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 42203479 is about 6496.4204759236. The cubic root of 42203479 is about 348.1631083497.

The spelling of 42203479 in words is "forty-two million, two hundred three thousand, four hundred seventy-nine".