123011478424 has 16 divisors (see below), whose sum is σ = 236880212400. Its totient is φ = 59843421792.

The previous prime is 123011478397. The next prime is 123011478493. The reversal of 123011478424 is 424874110321.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 207789364 + ... + 207789955.

It is an arithmetic number, because the mean of its divisors is an integer number (14805013275).

Almost surely, 2^123011478424 is an apocalyptic number.

It is an amenable number.

123011478424 is a deficient number, since it is larger than the sum of its proper divisors (113868733976).

123011478424 is a wasteful number, since it uses less digits than its factorization.

123011478424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415579362 (or 415579358 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

Adding to 123011478424 its reverse (424874110321), we get a palindrome (547885588745).

The spelling of 123011478424 in words is "one hundred twenty-three billion, eleven million, four hundred seventy-eight thousand, four hundred twenty-four".