667242131423 has 16 divisors (see below), whose sum is σ = 802721137920. Its totient is φ = 541804588416.

The previous prime is 667242131401. The next prime is 667242131441. The reversal of 667242131423 is 324131242766.

It is not a de Polignac number, because 667242131423 - 2⁸ = 667242131167 is a prime.

It is a super-3 number, since 3×667242131423³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667242121423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6791015 + ... + 6888567.

It is an arithmetic number, because the mean of its divisors is an integer number (50170071120).

Almost surely, 2^667242131423 is an apocalyptic number.

667242131423 is a deficient number, since it is larger than the sum of its proper divisors (135479006497).

667242131423 is a wasteful number, since it uses less digits than its factorization.

667242131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149006.

The product of its digits is 290304, while the sum is 41.

The spelling of 667242131423 in words is "six hundred sixty-seven billion, two hundred forty-two million, one hundred thirty-one thousand, four hundred twenty-three".