210120030340 has 96 divisors (see below), whose sum is σ = 492795031680. Its totient is φ = 74613888000.

The previous prime is 210120030203. The next prime is 210120030353. The reversal of 210120030340 is 43030021012.

It is a happy number.

It is a super-3 number, since 3×210120030340³ (a number of 35 digits) contains 333 as substring.

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, 1557291 + ... + 1686829.

It is an arithmetic number, because the mean of its divisors is an integer number (5133281580).

Almost surely, 2^210120030340 is an apocalyptic number.

210120030340 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 210120030340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246397515840).

210120030340 is an abundant number, since it is smaller than the sum of its proper divisors (282675001340).

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

210120030340 is a wasteful number, since it uses less digits than its factorization.

210120030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129733 (or 129731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 210120030340 its reverse (43030021012), we get a palindrome (253150051352).

The spelling of 210120030340 in words is "two hundred ten billion, one hundred twenty million, thirty thousand, three hundred forty".