210042121413 has 4 divisors (see below), whose sum is σ = 280056161888. Its totient is φ = 140028080940.

The previous prime is 210042121409. The next prime is 210042121561. The reversal of 210042121413 is 314121240012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210042121413 - 2² = 210042121409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210042121413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210042122413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35007020233 + ... + 35007020238.

It is an arithmetic number, because the mean of its divisors is an integer number (70014040472).

Almost surely, 2^210042121413 is an apocalyptic number.

It is an amenable number.

210042121413 is a deficient number, since it is larger than the sum of its proper divisors (70014040475).

210042121413 is an equidigital number, since it uses as much as digits as its factorization.

210042121413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70014040474.

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

Adding to 210042121413 its reverse (314121240012), we get a palindrome (524163361425).

The spelling of 210042121413 in words is "two hundred ten billion, forty-two million, one hundred twenty-one thousand, four hundred thirteen".