685547124142 has 8 divisors (see below), whose sum is σ = 1041337404000. Its totient is φ = 338434656144.

The previous prime is 685547124127. The next prime is 685547124149. The reversal of 685547124142 is 241421745586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685547124149) 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, 2169452767 + ... + 2169453082.

It is an arithmetic number, because the mean of its divisors is an integer number (130167175500).

Almost surely, 2^685547124142 is an apocalyptic number.

685547124142 is a deficient number, since it is larger than the sum of its proper divisors (355790279858).

685547124142 is a wasteful number, since it uses less digits than its factorization.

685547124142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338905930.

The product of its digits is 2150400, while the sum is 49.

The spelling of 685547124142 in words is "six hundred eighty-five billion, five hundred forty-seven million, one hundred twenty-four thousand, one hundred forty-two".