1002023120 has 80 divisors (see below), whose sum is σ = 2667531648. Its totient is φ = 342904320.

The previous prime is 1002023119. The next prime is 1002023147. The reversal of 1002023120 is 213202001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368807 + ... + 371513.

Almost surely, 2^1002023120 is an apocalyptic number.

1002023120 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 1002023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333765824).

1002023120 is an abundant number, since it is smaller than the sum of its proper divisors (1665508528).

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

1002023120 is a wasteful number, since it uses less digits than its factorization.

1002023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388 (or 3382 counting only the distinct ones).

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

The square root of 1002023120 is about 31654.7487748679. The cubic root of 1002023120 is about 1000.6739190644.

Adding to 1002023120 its reverse (213202001), we get a palindrome (1215225121).

The spelling of 1002023120 in words is "one billion, two million, twenty-three thousand, one hundred twenty".