210123072 has 168 divisors, whose sum is σ = 637946400. Its totient is φ = 68553216.

The previous prime is 210123029. The next prime is 210123091. The reversal of 210123072 is 270321012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 917454 + ... + 917682.

It is an arithmetic number, because the mean of its divisors is an integer number (3797300).

Almost surely, 2^210123072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210123072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318973200).

210123072 is an abundant number, since it is smaller than the sum of its proper divisors (427823328).

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

210123072 is an equidigital number, since it uses as much as digits as its factorization.

210123072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 210123072 is about 14495.6225116412. The cubic root of 210123072 is about 594.5082885307.

Adding to 210123072 its reverse (270321012), we get a palindrome (480444084).

The spelling of 210123072 in words is "two hundred ten million, one hundred twenty-three thousand, seventy-two".