123755428 has 12 divisors (see below), whose sum is σ = 217472332. Its totient is φ = 61620480.

The previous prime is 123755399. The next prime is 123755431. The reversal of 123755428 is 824557321.

It can be written as a sum of positive squares in 2 ways, for example, as 85414564 + 38340864 = 9242^2 + 6192^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 63225 + ... + 65152.

Almost surely, 2^123755428 is an apocalyptic number.

It is an amenable number.

123755428 is a deficient number, since it is larger than the sum of its proper divisors (93716904).

123755428 is a wasteful number, since it uses less digits than its factorization.

123755428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128622 (or 128620 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 123755428 is about 11124.5416984252. The cubic root of 123755428 is about 498.3350325877.

It can be divided in two parts, 1237 and 55428, that added together give a palindrome (56665).

The spelling of 123755428 in words is "one hundred twenty-three million, seven hundred fifty-five thousand, four hundred twenty-eight".