247040823124 has 6 divisors (see below), whose sum is σ = 432321440474. Its totient is φ = 123520411560.

The previous prime is 247040823067. The next prime is 247040823149. The reversal of 247040823124 is 421328040742.

It can be written as a sum of positive squares in only one way, i.e., 143625840400 + 103414982724 = 378980^2 + 321582^2 .

It is a super-2 number, since 2×247040823124² (a number of 24 digits) 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, 30880102887 + ... + 30880102894.

Almost surely, 2^247040823124 is an apocalyptic number.

It is an amenable number.

247040823124 is a deficient number, since it is larger than the sum of its proper divisors (185280617350).

247040823124 is a wasteful number, since it uses less digits than its factorization.

247040823124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61760205785 (or 61760205783 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

Adding to 247040823124 its reverse (421328040742), we get a palindrome (668368863866).

The spelling of 247040823124 in words is "two hundred forty-seven billion, forty million, eight hundred twenty-three thousand, one hundred twenty-four".