123038047 has 4 divisors (see below), whose sum is σ = 134223336. Its totient is φ = 111852760.

The previous prime is 123038033. The next prime is 123038051. The reversal of 123038047 is 740830321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123038047 is a prime.

It is a super-2 number, since 2×123038047² = 30276722019148418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123038077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5592628 + ... + 5592649.

It is an arithmetic number, because the mean of its divisors is an integer number (33555834).

Almost surely, 2^123038047 is an apocalyptic number.

123038047 is a deficient number, since it is larger than the sum of its proper divisors (11185289).

123038047 is a wasteful number, since it uses less digits than its factorization.

123038047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185288.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 123038047 is about 11092.2516650137. The cubic root of 123038047 is about 497.3702558058.

Adding to 123038047 its reverse (740830321), we get a palindrome (863868368).

The spelling of 123038047 in words is "one hundred twenty-three million, thirty-eight thousand, forty-seven".