210402230042420 has 96 divisors (see below), whose sum is σ = 500928213945600. Its totient is φ = 73590599568384.

The previous prime is 210402230042399. The next prime is 210402230042483. The reversal of 210402230042420 is 24240032204012.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 210402230042420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45820712 + ... + 50203008.

It is an arithmetic number, because the mean of its divisors is an integer number (5218002228600).

Almost surely, 2^{210402230042420} is an apocalyptic number.

210402230042420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210402230042420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250464106972800).

210402230042420 is an abundant number, since it is smaller than the sum of its proper divisors (290525983903180).

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

210402230042420 is a wasteful number, since it uses less digits than its factorization.

210402230042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392057 (or 4392055 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 210402230042420 its reverse (24240032204012), we get a palindrome (234642262246432).

The spelling of 210402230042420 in words is "two hundred ten trillion, four hundred two billion, two hundred thirty million, forty-two thousand, four hundred twenty".