247130642 has 24 divisors (see below), whose sum is σ = 414163596. Its totient is φ = 110484000.

The previous prime is 247130641. The next prime is 247130647. The reversal of 247130642 is 246031742.

247130642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 247086961 + 43681 = 15719^2 + 209^2 .

It is a super-2 number, since 2×247130642² = 122147108430664328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247130641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6392 + ... + 23132.

Almost surely, 2^247130642 is an apocalyptic number.

247130642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247130642 is a deficient number, since it is larger than the sum of its proper divisors (167032954).

247130642 is a wasteful number, since it uses less digits than its factorization.

247130642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16826 (or 16815 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 247130642 is about 15720.3893717681. The cubic root of 247130642 is about 627.5411353805.

The spelling of 247130642 in words is "two hundred forty-seven million, one hundred thirty thousand, six hundred forty-two".