42943151 has 2 divisors, whose sum is σ = 42943152. Its totient is φ = 42943150.

The previous prime is 42943127. The next prime is 42943177. The reversal of 42943151 is 15134924.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42943151 is a prime.

It is a super-2 number, since 2×42943151² = 3688228435617602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42943651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21471575 + 21471576.

It is an arithmetic number, because the mean of its divisors is an integer number (21471576).

Almost surely, 2^42943151 is an apocalyptic number.

42943151 is a deficient number, since it is larger than the sum of its proper divisors (1).

42943151 is an equidigital number, since it uses as much as digits as its factorization.

42943151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 42943151 is about 6553.1023950492. The cubic root of 42943151 is about 350.1853467280.

The spelling of 42943151 in words is "forty-two million, nine hundred forty-three thousand, one hundred fifty-one".