122547993 has 8 divisors (see below), whose sum is σ = 164118048. Its totient is φ = 81338304.

The previous prime is 122547983. The next prime is 122548001. The reversal of 122547993 is 399745221.

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

It is not a de Polignac number, because 122547993 - 2⁵ = 122547961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122547973) 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, 89296 + ... + 90657.

It is an arithmetic number, because the mean of its divisors is an integer number (20514756).

Almost surely, 2^122547993 is an apocalyptic number.

It is an amenable number.

122547993 is a deficient number, since it is larger than the sum of its proper divisors (41570055).

122547993 is a wasteful number, since it uses less digits than its factorization.

122547993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180183.

The product of its digits is 136080, while the sum is 42.

The square root of 122547993 is about 11070.1397010155. The cubic root of 122547993 is about 496.7090440746.

The spelling of 122547993 in words is "one hundred twenty-two million, five hundred forty-seven thousand, nine hundred ninety-three".