123945477 has 8 divisors (see below), whose sum is σ = 167252064. Its totient is φ = 81634608.

The previous prime is 123945469. The next prime is 123945499. The reversal of 123945477 is 774549321.

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

It is not a de Polignac number, because 123945477 - 2³ = 123945469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123945457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248638 + ... + 249135.

It is an arithmetic number, because the mean of its divisors is an integer number (20906508).

Almost surely, 2^123945477 is an apocalyptic number.

It is an amenable number.

123945477 is a deficient number, since it is larger than the sum of its proper divisors (43306587).

123945477 is an equidigital number, since it uses as much as digits as its factorization.

123945477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497859.

The product of its digits is 211680, while the sum is 42.

The square root of 123945477 is about 11133.0803015158. The cubic root of 123945477 is about 498.5899968532.

It can be divided in two parts, 12394 and 5477, that added together give a palindrome (17871).

The spelling of 123945477 in words is "one hundred twenty-three million, nine hundred forty-five thousand, four hundred seventy-seven".