1020123200 has 168 divisors, whose sum is σ = 2627522304. Its totient is φ = 389376000.

The previous prime is 1020123197. The next prime is 1020123217. The reversal of 1020123200 is 23210201.

It is a happy 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, 6497522 + ... + 6497678.

Almost surely, 2^1020123200 is an apocalyptic number.

1020123200 is a gapful number since it is divisible by the number (10) 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 1020123200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313761152).

1020123200 is an abundant number, since it is smaller than the sum of its proper divisors (1607399104).

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

1020123200 is a wasteful number, since it uses less digits than its factorization.

1020123200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1020123200 is about 31939.3675579214. The cubic root of 1020123200 is about 1006.6632360062.

Adding to 1020123200 its reverse (23210201), we get a palindrome (1043333401).

The spelling of 1020123200 in words is "one billion, twenty million, one hundred twenty-three thousand, two hundred".