1243132064 has 48 divisors (see below), whose sum is σ = 2532720960. Its totient is φ = 600230400.

The previous prime is 1243132061. The next prime is 1243132069. The reversal of 1243132064 is 4602313421.

It is not an unprimeable number, because it can be changed into a prime (1243132061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117389 + ... + 127539.

It is an arithmetic number, because the mean of its divisors is an integer number (52765020).

Almost surely, 2^1243132064 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 1243132064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266360480).

1243132064 is an abundant number, since it is smaller than the sum of its proper divisors (1289588896).

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

1243132064 is a wasteful number, since it uses less digits than its factorization.

1243132064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10293 (or 10285 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1243132064 is about 35258.0779963968. The cubic root of 1243132064 is about 1075.2408514601.

Adding to 1243132064 its reverse (4602313421), we get a palindrome (5845445485).

The spelling of 1243132064 in words is "one billion, two hundred forty-three million, one hundred thirty-two thousand, sixty-four".