247575142 has 4 divisors (see below), whose sum is σ = 371362716. Its totient is φ = 123787570.

The previous prime is 247575113. The next prime is 247575169. The reversal of 247575142 is 241575742.

247575142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×247575142² = 122586901872640328, 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 as a sum of consecutive naturals, namely, 61893784 + ... + 61893787.

It is an arithmetic number, because the mean of its divisors is an integer number (92840679).

Almost surely, 2^247575142 is an apocalyptic number.

247575142 is a deficient number, since it is larger than the sum of its proper divisors (123787574).

247575142 is a wasteful number, since it uses less digits than its factorization.

247575142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123787573.

The product of its digits is 78400, while the sum is 37.

The square root of 247575142 is about 15734.5207108447. The cubic root of 247575142 is about 627.9171510245.

The spelling of 247575142 in words is "two hundred forty-seven million, five hundred seventy-five thousand, one hundred forty-two".