131402420421 has 8 divisors (see below), whose sum is σ = 175206888864. Its totient is φ = 87599782800.

The previous prime is 131402420417. The next prime is 131402420423. The reversal of 131402420421 is 124024204131.

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

It is not a de Polignac number, because 131402420421 - 2² = 131402420417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131402420391 and 131402420400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131402420423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 280426 + ... + 584331.

It is an arithmetic number, because the mean of its divisors is an integer number (21900861108).

Almost surely, 2^131402420421 is an apocalyptic number.

It is an amenable number.

131402420421 is a deficient number, since it is larger than the sum of its proper divisors (43804468443).

131402420421 is an equidigital number, since it uses as much as digits as its factorization.

131402420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915411.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 131402420421 its reverse (124024204131), we get a palindrome (255426624552).

The spelling of 131402420421 in words is "one hundred thirty-one billion, four hundred two million, four hundred twenty thousand, four hundred twenty-one".