123020402 has 8 divisors (see below), whose sum is σ = 194242800. Its totient is φ = 58272804.

The previous prime is 123020389. The next prime is 123020413. The reversal of 123020402 is 204020321.

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1618652 + ... + 1618727.

It is an arithmetic number, because the mean of its divisors is an integer number (24280350).

Almost surely, 2^123020402 is an apocalyptic number.

123020402 is a deficient number, since it is larger than the sum of its proper divisors (71222398).

123020402 is a wasteful number, since it uses less digits than its factorization.

123020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237400.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 123020402 is about 11091.4562614654. The cubic root of 123020402 is about 497.3464785598.

Adding to 123020402 its reverse (204020321), we get a palindrome (327040723).

The spelling of 123020402 in words is "one hundred twenty-three million, twenty thousand, four hundred two".