247801142 has 8 divisors (see below), whose sum is σ = 372087432. Its totient is φ = 123772000.

The previous prime is 247801139. The next prime is 247801157. The reversal of 247801142 is 241108742.

247801142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×247801142² = 122810811953008328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61859 + ... + 65742.

It is an arithmetic number, because the mean of its divisors is an integer number (46510929).

Almost surely, 2^247801142 is an apocalyptic number.

247801142 is a deficient number, since it is larger than the sum of its proper divisors (124286290).

247801142 is a wasteful number, since it uses less digits than its factorization.

247801142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128574.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 247801142 is about 15741.7007340376. The cubic root of 247801142 is about 628.1081585115.

Adding to 247801142 its reverse (241108742), we get a palindrome (488909884).

The spelling of 247801142 in words is "two hundred forty-seven million, eight hundred one thousand, one hundred forty-two".