723242132 has 24 divisors (see below), whose sum is σ = 1297786560. Its totient is φ = 352463040.

The previous prime is 723242131. The next prime is 723242147. The reversal of 723242132 is 231242327.

It is a happy number.

723242132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×723242132⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723242131) 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, 306983 + ... + 309329.

It is an arithmetic number, because the mean of its divisors is an integer number (54074440).

Almost surely, 2^723242132 is an apocalyptic number.

It is an amenable number.

723242132 is a deficient number, since it is larger than the sum of its proper divisors (574544428).

723242132 is a wasteful number, since it uses less digits than its factorization.

723242132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271 (or 4269 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 723242132 is about 26893.1614355769. The cubic root of 723242132 is about 897.6242411473.

Adding to 723242132 its reverse (231242327), we get a palindrome (954484459).

The spelling of 723242132 in words is "seven hundred twenty-three million, two hundred forty-two thousand, one hundred thirty-two".