142421623642146 has 128 divisors (see below), whose sum is σ = 302343633469440. Its totient is φ = 44600564736000.

The previous prime is 142421623642099. The next prime is 142421623642153. The reversal of 142421623642146 is 641246326124241.

It is a junction number, because it is equal to n+sod(n) for n = 142421623642095 and 142421623642104.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17611177315 + ... + 17611185401.

It is an arithmetic number, because the mean of its divisors is an integer number (2362059636480).

Almost surely, 2^{142421623642146} is an apocalyptic number.

142421623642146 is an abundant number, since it is smaller than the sum of its proper divisors (159922009827294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142421623642146 is a wasteful number, since it uses less digits than its factorization.

142421623642146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720.

The product of its digits is 2654208, while the sum is 48.

Adding to 142421623642146 its reverse (641246326124241), we get a palindrome (783667949766387).

The spelling of 142421623642146 in words is "one hundred forty-two trillion, four hundred twenty-one billion, six hundred twenty-three million, six hundred forty-two thousand, one hundred forty-six".