123400352 has 12 divisors (see below), whose sum is σ = 242944506. Its totient is φ = 61700160.

The previous prime is 123400351. The next prime is 123400357. The reversal of 123400352 is 253004321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121969936 + 1430416 = 11044^2 + 1196^2 .

It is not an unprimeable number, because it can be changed into a prime (123400351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928099 + ... + 1928162.

Almost surely, 2^123400352 is an apocalyptic number.

It is an amenable number.

123400352 is a deficient number, since it is larger than the sum of its proper divisors (119544154).

123400352 is an equidigital number, since it uses as much as digits as its factorization.

123400352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856271 (or 3856263 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 123400352 is about 11108.5711052322. The cubic root of 123400352 is about 497.8579725410.

Adding to 123400352 its reverse (253004321), we get a palindrome (376404673).

The spelling of 123400352 in words is "one hundred twenty-three million, four hundred thousand, three hundred fifty-two".