123770623 has 4 divisors (see below), whose sum is σ = 124590448. Its totient is φ = 122950800.

The previous prime is 123770593. The next prime is 123770629. The reversal of 123770623 is 326077321.

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-123770623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123770629) 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, 409686 + ... + 409987.

It is an arithmetic number, because the mean of its divisors is an integer number (31147612).

Almost surely, 2^123770623 is an apocalyptic number.

123770623 is a deficient number, since it is larger than the sum of its proper divisors (819825).

123770623 is an equidigital number, since it uses as much as digits as its factorization.

123770623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819824.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 123770623 is about 11125.2246269457. The cubic root of 123770623 is about 498.3554273589.

The spelling of 123770623 in words is "one hundred twenty-three million, seven hundred seventy thousand, six hundred twenty-three".