123432402 has 32 divisors (see below), whose sum is σ = 252573120. Its totient is φ = 40201920.

The previous prime is 123432401. The next prime is 123432433. The reversal of 123432402 is 204234321.

It is not an unprimeable number, because it can be changed into a prime (123432401) 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 15 ways as a sum of consecutive naturals, for example, 58624 + ... + 60692.

It is an arithmetic number, because the mean of its divisors is an integer number (7892910).

Almost surely, 2^123432402 is an apocalyptic number.

123432402 is an abundant number, since it is smaller than the sum of its proper divisors (129140718).

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

123432402 is a wasteful number, since it uses less digits than its factorization.

123432402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123432402 is about 11110.0135913508. The cubic root of 123432402 is about 497.9010706537.

Adding to 123432402 its reverse (204234321), we get a palindrome (327666723).

The spelling of 123432402 in words is "one hundred twenty-three million, four hundred thirty-two thousand, four hundred two".