42253943 has 2 divisors, whose sum is σ = 42253944. Its totient is φ = 42253942.

The previous prime is 42253931. The next prime is 42253969. The reversal of 42253943 is 34935224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42253943 - 2⁴ = 42253927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42253973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21126971 + 21126972.

It is an arithmetic number, because the mean of its divisors is an integer number (21126972).

Almost surely, 2^42253943 is an apocalyptic number.

42253943 is a deficient number, since it is larger than the sum of its proper divisors (1).

42253943 is an equidigital number, since it uses as much as digits as its factorization.

42253943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 42253943 is about 6500.3033006161. The cubic root of 42253943 is about 348.3018228608.

The spelling of 42253943 in words is "forty-two million, two hundred fifty-three thousand, nine hundred forty-three".