131421001002402 has 16 divisors (see below), whose sum is σ = 262842257604960. Its totient is φ = 43806957734112.

The previous prime is 131421001002397. The next prime is 131421001002409. The reversal of 131421001002402 is 204200100124131.

It is not an unprimeable number, because it can be changed into a prime (131421001002409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3607627 + ... + 16608942.

It is an arithmetic number, because the mean of its divisors is an integer number (16427641100310).

Almost surely, 2^{131421001002402} is an apocalyptic number.

131421001002402 is an abundant number, since it is smaller than the sum of its proper divisors (131421256602558).

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

131421001002402 is a wasteful number, since it uses less digits than its factorization.

131421001002402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300017.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 131421001002402 its reverse (204200100124131), we get a palindrome (335621101126533).

The spelling of 131421001002402 in words is "one hundred thirty-one trillion, four hundred twenty-one billion, one million, two thousand, four hundred two".