210404142321402 has 32 divisors (see below), whose sum is σ = 421404522739200. Its totient is φ = 70035362316288.

The previous prime is 210404142321377. The next prime is 210404142321449. The reversal of 210404142321402 is 204123241404012.

It is a self number, because there is not a number n which added to its sum of digits gives 210404142321402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37073463 + ... + 42370389.

It is an arithmetic number, because the mean of its divisors is an integer number (13168891335600).

Almost surely, 2^{210404142321402} is an apocalyptic number.

210404142321402 is an abundant number, since it is smaller than the sum of its proper divisors (211000380417798).

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

210404142321402 is a wasteful number, since it uses less digits than its factorization.

210404142321402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306310.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 210404142321402 its reverse (204123241404012), we get a palindrome (414527383725414).

The spelling of 210404142321402 in words is "two hundred ten trillion, four hundred four billion, one hundred forty-two million, three hundred twenty-one thousand, four hundred two".