420340342320142 has 16 divisors (see below), whose sum is σ = 632918103707232. Its totient is φ = 209368518649120.

The previous prime is 420340342320139. The next prime is 420340342320161. The reversal of 420340342320142 is 241023243043024.

It is a junction number, because it is equal to n+sod(n) for n = 420340342320098 and 420340342320107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218432293 + ... + 220348240.

It is an arithmetic number, because the mean of its divisors is an integer number (39557381481702).

Almost surely, 2^{420340342320142} is an apocalyptic number.

420340342320142 is a deficient number, since it is larger than the sum of its proper divisors (212577761387090).

420340342320142 is a wasteful number, since it uses less digits than its factorization.

420340342320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438782363.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 420340342320142 its reverse (241023243043024), we get a palindrome (661363585363166).

The spelling of 420340342320142 in words is "four hundred twenty trillion, three hundred forty billion, three hundred forty-two million, three hundred twenty thousand, one hundred forty-two".