42263971 has 2 divisors, whose sum is σ = 42263972. Its totient is φ = 42263970.

The previous prime is 42263959. The next prime is 42264031. The reversal of 42263971 is 17936224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42263971 - 2⁵ = 42263939 is a prime.

It is not a weakly prime, because it can be changed into another prime (42266971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21131985 + 21131986.

It is an arithmetic number, because the mean of its divisors is an integer number (21131986).

Almost surely, 2^42263971 is an apocalyptic number.

42263971 is a deficient number, since it is larger than the sum of its proper divisors (1).

42263971 is an equidigital number, since it uses as much as digits as its factorization.

42263971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 42263971 is about 6501.0746034790. The cubic root of 42263971 is about 348.3293744860.

It can be divided in two parts, 42263 and 971, that added together give a palindrome (43234).

The spelling of 42263971 in words is "forty-two million, two hundred sixty-three thousand, nine hundred seventy-one".