123451039 has 4 divisors (see below), whose sum is σ = 123525400. Its totient is φ = 123376680.

The previous prime is 123450997. The next prime is 123451049. The reversal of 123451039 is 930154321.

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

It is a cyclic number.

It is not a de Polignac number, because 123451039 - 2⁷ = 123450911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123450998 and 123451016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123451049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34632 + ... + 38029.

It is an arithmetic number, because the mean of its divisors is an integer number (30881350).

Almost surely, 2^123451039 is an apocalyptic number.

123451039 is a deficient number, since it is larger than the sum of its proper divisors (74361).

123451039 is an equidigital number, since it uses as much as digits as its factorization.

123451039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74360.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 123451039 is about 11110.8523075415. The cubic root of 123451039 is about 497.9261286749.

The spelling of 123451039 in words is "one hundred twenty-three million, four hundred fifty-one thousand, thirty-nine".