210442131420 has 24 divisors (see below), whose sum is σ = 589237968144. Its totient is φ = 56117901696.

The previous prime is 210442131397. The next prime is 210442131437. The reversal of 210442131420 is 24131244012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753684369 + ... + 1753684488.

It is an arithmetic number, because the mean of its divisors is an integer number (24551582006).

Almost surely, 2^210442131420 is an apocalyptic number.

210442131420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210442131420 is an abundant number, since it is smaller than the sum of its proper divisors (378795836724).

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

210442131420 is a wasteful number, since it uses less digits than its factorization.

210442131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507368869 (or 3507368867 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 210442131420 its reverse (24131244012), we get a palindrome (234573375432).

The spelling of 210442131420 in words is "two hundred ten billion, four hundred forty-two million, one hundred thirty-one thousand, four hundred twenty".