142123541305 has 16 divisors (see below), whose sum is σ = 174908543040. Its totient is φ = 110803912128.

The previous prime is 142123541293. The next prime is 142123541323. The reversal of 142123541305 is 503145321241.

It is a cyclic number.

It is not a de Polignac number, because 142123541305 - 2¹⁵ = 142123508537 is a prime.

It is a super-2 number, since 2×142123541305² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650850 + ... + 841339.

It is an arithmetic number, because the mean of its divisors is an integer number (10931783940).

Almost surely, 2^142123541305 is an apocalyptic number.

It is an amenable number.

142123541305 is a deficient number, since it is larger than the sum of its proper divisors (32785001735).

142123541305 is a wasteful number, since it uses less digits than its factorization.

142123541305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492680.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 142123541305 its reverse (503145321241), we get a palindrome (645268862546).

The spelling of 142123541305 in words is "one hundred forty-two billion, one hundred twenty-three million, five hundred forty-one thousand, three hundred five".