123402004 has 12 divisors (see below), whose sum is σ = 235585728. Its totient is φ = 56091800.

The previous prime is 123401977. The next prime is 123402011. The reversal of 123402004 is 400204321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402252 + ... + 1402339.

It is an arithmetic number, because the mean of its divisors is an integer number (19632144).

Almost surely, 2^123402004 is an apocalyptic number.

It is an amenable number.

123402004 is a deficient number, since it is larger than the sum of its proper divisors (112183724).

123402004 is a wasteful number, since it uses less digits than its factorization.

123402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804606 (or 2804604 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 123402004 is about 11108.6454619814. The cubic root of 123402004 is about 497.8601941924.

Adding to 123402004 its reverse (400204321), we get a palindrome (523606325).

The spelling of 123402004 in words is "one hundred twenty-three million, four hundred two thousand, four".