1302123132 has 72 divisors (see below), whose sum is σ = 3420598272. Its totient is φ = 417204000.

The previous prime is 1302123131. The next prime is 1302123169. The reversal of 1302123132 is 2313212031.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302123131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164653 + ... + 172379.

Almost surely, 2^1302123132 is an apocalyptic number.

1302123132 is a gapful number since it is divisible by the number (12) 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 1302123132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710299136).

1302123132 is an abundant number, since it is smaller than the sum of its proper divisors (2118475140).

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

1302123132 is a wasteful number, since it uses less digits than its factorization.

1302123132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919 (or 7914 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1302123132 is about 36084.9432866397. The cubic root of 1302123132 is about 1091.9867063551.

Adding to 1302123132 its reverse (2313212031), we get a palindrome (3615335163).

The spelling of 1302123132 in words is "one billion, three hundred two million, one hundred twenty-three thousand, one hundred thirty-two".