42943747 has 18 divisors (see below), whose sum is σ = 54916764. Its totient is φ = 33458040.

The previous prime is 42943741. The next prime is 42943753. The reversal of 42943747 is 74734924.

It is an interprime number because it is at equal distance from previous prime (42943741) and next prime (42943753).

It is not a de Polignac number, because 42943747 - 2¹⁹ = 42419459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42943741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2308 + ... + 9550.

Almost surely, 2^42943747 is an apocalyptic number.

42943747 is a deficient number, since it is larger than the sum of its proper divisors (11973017).

42943747 is a wasteful number, since it uses less digits than its factorization.

42943747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279 (or 7261 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 42943747 is about 6553.1478695357. The cubic root of 42943747 is about 350.1869667730.

The spelling of 42943747 in words is "forty-two million, nine hundred forty-three thousand, seven hundred forty-seven".