123146428 has 12 divisors (see below), whose sum is σ = 215887672. Its totient is φ = 61464240.

The previous prime is 123146377. The next prime is 123146431. The reversal of 123146428 is 824641321.

It is a self number, because there is not a number n which added to its sum of digits gives 123146428.

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, 24675 + ... + 29242.

Almost surely, 2^123146428 is an apocalyptic number.

It is an amenable number.

123146428 is a deficient number, since it is larger than the sum of its proper divisors (92741244).

123146428 is a wasteful number, since it uses less digits than its factorization.

123146428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54492 (or 54490 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 123146428 is about 11097.1360269215. The cubic root of 123146428 is about 497.5162530990.

Adding to 123146428 its reverse (824641321), we get a palindrome (947787749).

The spelling of 123146428 in words is "one hundred twenty-three million, one hundred forty-six thousand, four hundred twenty-eight".