123443402 has 8 divisors (see below), whose sum is σ = 185279556. Its totient is φ = 61683552.

The previous prime is 123443393. The next prime is 123443407. The reversal of 123443402 is 204344321.

It can be written as a sum of positive squares in 2 ways, for example, as 122965921 + 477481 = 11089^2 + 691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (123443407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14843 + ... + 21614.

Almost surely, 2^123443402 is an apocalyptic number.

123443402 is a deficient number, since it is larger than the sum of its proper divisors (61836154).

123443402 is a wasteful number, since it uses less digits than its factorization.

123443402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38152.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 123443402 is about 11110.5086292213. The cubic root of 123443402 is about 497.9158607979.

Adding to 123443402 its reverse (204344321), we get a palindrome (327787723).

The spelling of 123443402 in words is "one hundred twenty-three million, four hundred forty-three thousand, four hundred two".