123620217 has 8 divisors (see below), whose sum is σ = 188373696. Its totient is φ = 70640112.

The previous prime is 123620197. The next prime is 123620249. The reversal of 123620217 is 712026321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123620217 - 2⁶ = 123620153 is a prime.

It is a super-2 number, since 2×123620217² = 30563916102254178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123620267) 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 7 ways as a sum of consecutive naturals, for example, 2943318 + ... + 2943359.

It is an arithmetic number, because the mean of its divisors is an integer number (23546712).

Almost surely, 2^123620217 is an apocalyptic number.

It is an amenable number.

123620217 is a deficient number, since it is larger than the sum of its proper divisors (64753479).

123620217 is an equidigital number, since it uses as much as digits as its factorization.

123620217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886687.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 123620217 is about 11118.4628883673. The cubic root of 123620217 is about 498.1534784443.

Adding to 123620217 its reverse (712026321), we get a palindrome (835646538).

The spelling of 123620217 in words is "one hundred twenty-three million, six hundred twenty thousand, two hundred seventeen".