124869840871 has 4 divisors (see below), whose sum is σ = 125037903312. Its totient is φ = 124701778432.

The previous prime is 124869840817. The next prime is 124869840943. The reversal of 124869840871 is 178048968421.

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

It is a cyclic number.

It is not a de Polignac number, because 124869840871 - 2¹³ = 124869832679 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124869847871) 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, 84030106 + ... + 84031591.

It is an arithmetic number, because the mean of its divisors is an integer number (31259475828).

Almost surely, 2^124869840871 is an apocalyptic number.

124869840871 is a deficient number, since it is larger than the sum of its proper divisors (168062441).

124869840871 is an equidigital number, since it uses as much as digits as its factorization.

124869840871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168062440.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 124869840871 in words is "one hundred twenty-four billion, eight hundred sixty-nine million, eight hundred forty thousand, eight hundred seventy-one".