247842039 has 16 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 162814080.

The previous prime is 247842011. The next prime is 247842041. The reversal of 247842039 is 930248742.

It is not a de Polignac number, because 247842039 - 2¹² = 247837943 is a prime.

It is a super-2 number, since 2×247842039² = 122851352591355042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247841988 and 247842006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247842079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208204 + ... + 209390.

It is an arithmetic number, because the mean of its divisors is an integer number (20956320).

Almost surely, 2^247842039 is an apocalyptic number.

247842039 is a deficient number, since it is larger than the sum of its proper divisors (87459081).

247842039 is a wasteful number, since it uses less digits than its factorization.

247842039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 247842039 is about 15742.9996823985. Note that the first 3 decimals coincide. The cubic root of 247842039 is about 628.1427108493.

The spelling of 247842039 in words is "two hundred forty-seven million, eight hundred forty-two thousand, thirty-nine".