122712347 has 4 divisors (see below), whose sum is σ = 125323296. Its totient is φ = 120101400.

The previous prime is 122712319. The next prime is 122712349. The reversal of 122712347 is 743217221.

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 122712347 - 2¹⁸ = 122450203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122712349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305404 + ... + 1305497.

It is an arithmetic number, because the mean of its divisors is an integer number (31330824).

Almost surely, 2^122712347 is an apocalyptic number.

122712347 is a deficient number, since it is larger than the sum of its proper divisors (2610949).

122712347 is an equidigital number, since it uses as much as digits as its factorization.

122712347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610948.

The product of its digits is 4704, while the sum is 29.

The square root of 122712347 is about 11077.5605166481. The cubic root of 122712347 is about 496.9309969826.

Adding to 122712347 its reverse (743217221), we get a palindrome (865929568).

The spelling of 122712347 in words is "one hundred twenty-two million, seven hundred twelve thousand, three hundred forty-seven".