247073142 has 8 divisors (see below), whose sum is σ = 494146296. Its totient is φ = 82357712.

The previous prime is 247073117. The next prime is 247073143. The reversal of 247073142 is 241370742.

It is a sphenic number, since it is the product of 3 distinct primes.

247073142 is an admirable number.

It is a super-2 number, since 2×247073142² = 122090274995504328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247073143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20589423 + ... + 20589434.

It is an arithmetic number, because the mean of its divisors is an integer number (61768287).

Almost surely, 2^247073142 is an apocalyptic number.

247073142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247073142 is a wasteful number, since it uses less digits than its factorization.

247073142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41178862.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 247073142 is about 15718.5604302684. The cubic root of 247073142 is about 627.4924615106.

The spelling of 247073142 in words is "two hundred forty-seven million, seventy-three thousand, one hundred forty-two".