247142136 has 32 divisors (see below), whose sum is σ = 620168400. Its totient is φ = 82072320.

The previous prime is 247142123. The next prime is 247142167. The reversal of 247142136 is 631241742.

It is a super-2 number, since 2×247142136² = 122158470773284992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12685 + ... + 25596.

Almost surely, 2^247142136 is an apocalyptic number.

It is an amenable number.

247142136 is an abundant number, since it is smaller than the sum of its proper divisors (373026264).

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

247142136 is a wasteful number, since it uses less digits than its factorization.

247142136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38559 (or 38555 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 247142136 is about 15720.7549437042. The cubic root of 247142136 is about 627.5508641700.

Adding to 247142136 its reverse (631241742), we get a palindrome (878383878).

The spelling of 247142136 in words is "two hundred forty-seven million, one hundred forty-two thousand, one hundred thirty-six".