42102943 has 2 divisors, whose sum is σ = 42102944. Its totient is φ = 42102942.

The previous prime is 42102937. The next prime is 42102959. The reversal of 42102943 is 34920124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42102943 - 2⁵ = 42102911 is a prime.

It is a super-2 number, since 2×42102943² = 3545315618522498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42102923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051471 + 21051472.

It is an arithmetic number, because the mean of its divisors is an integer number (21051472).

Almost surely, 2^42102943 is an apocalyptic number.

42102943 is a deficient number, since it is larger than the sum of its proper divisors (1).

42102943 is an equidigital number, since it uses as much as digits as its factorization.

42102943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 42102943 is about 6488.6780625949. The cubic root of 42102943 is about 347.8864269142.

The spelling of 42102943 in words is "forty-two million, one hundred two thousand, nine hundred forty-three".