247124641 has 4 divisors (see below), whose sum is σ = 247904532. Its totient is φ = 246344752.

The previous prime is 247124623. The next prime is 247124681. The reversal of 247124641 is 146421742.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14409616 + 232715025 = 3796^2 + 15255^2 .

It is a cyclic number.

It is not a de Polignac number, because 247124641 - 2⁷ = 247124513 is a prime.

It is a super-2 number, since 2×247124641² = 122141176378757762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247124681) 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, 389470 + ... + 390103.

It is an arithmetic number, because the mean of its divisors is an integer number (61976133).

Almost surely, 2^247124641 is an apocalyptic number.

It is an amenable number.

247124641 is a deficient number, since it is larger than the sum of its proper divisors (779891).

247124641 is an equidigital number, since it uses as much as digits as its factorization.

247124641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779890.

The product of its digits is 10752, while the sum is 31.

The square root of 247124641 is about 15720.1985038358. The cubic root of 247124641 is about 627.5360558744.

The spelling of 247124641 in words is "two hundred forty-seven million, one hundred twenty-four thousand, six hundred forty-one".