42043000247 has 2 divisors, whose sum is σ = 42043000248. Its totient is φ = 42043000246.

The previous prime is 42043000231. The next prime is 42043000267. The reversal of 42043000247 is 74200034024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42043000247 - 2⁴ = 42043000231 is a prime.

It is a super-2 number, since 2×42043000247² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42043000267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021500123 + 21021500124.

It is an arithmetic number, because the mean of its divisors is an integer number (21021500124).

Almost surely, 2^42043000247 is an apocalyptic number.

42043000247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043000247 is an equidigital number, since it uses as much as digits as its factorization.

42043000247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The spelling of 42043000247 in words is "forty-two billion, forty-three million, two hundred forty-seven", and thus it is an aban number.