123107947 has 4 divisors (see below), whose sum is σ = 123130296. Its totient is φ = 123085600.

The previous prime is 123107927. The next prime is 123107951. The reversal of 123107947 is 749701321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749701321 = 337 ⋅2224633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123107947 is a prime.

It is a super-2 number, since 2×123107947² = 30311133229109618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123107927) 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, 3603 + ... + 16099.

It is an arithmetic number, because the mean of its divisors is an integer number (30782574).

Almost surely, 2^123107947 is an apocalyptic number.

123107947 is a deficient number, since it is larger than the sum of its proper divisors (22349).

123107947 is an equidigital number, since it uses as much as digits as its factorization.

123107947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22348.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 123107947 is about 11095.4020657207. The cubic root of 123107947 is about 497.4644261324.

The spelling of 123107947 in words is "one hundred twenty-three million, one hundred seven thousand, nine hundred forty-seven".