123145304 has 16 divisors (see below), whose sum is σ = 236529720. Its totient is φ = 60070720.

The previous prime is 123145301. The next prime is 123145313. The reversal of 123145304 is 403541321.

It is a self number, because there is not a number n which added to its sum of digits gives 123145304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123145301) 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 in 3 ways as a sum of consecutive naturals, for example, 187394 + ... + 188049.

Almost surely, 2^123145304 is an apocalyptic number.

It is an amenable number.

123145304 is a deficient number, since it is larger than the sum of its proper divisors (113384416).

123145304 is a wasteful number, since it uses less digits than its factorization.

123145304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375490 (or 375486 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 123145304 is about 11097.0853831085. The cubic root of 123145304 is about 497.5147394268.

Adding to 123145304 its reverse (403541321), we get a palindrome (526686625).

The spelling of 123145304 in words is "one hundred twenty-three million, one hundred forty-five thousand, three hundred four".