122543145 has 16 divisors (see below), whose sum is σ = 217854720. Its totient is φ = 65356272.

The previous prime is 122543119. The next prime is 122543153. The reversal of 122543145 is 541345221.

122543145 is a `hidden beast` number, since 1 + 225 + 431 + 4 + 5 = 666.

It is not a de Polignac number, because 122543145 - 2⁶ = 122543081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453729 + ... + 453998.

It is an arithmetic number, because the mean of its divisors is an integer number (13615920).

Almost surely, 2^122543145 is an apocalyptic number.

122543145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122543145 is a deficient number, since it is larger than the sum of its proper divisors (95311575).

122543145 is an equidigital number, since it uses as much as digits as its factorization.

122543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907741 (or 907735 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 122543145 is about 11069.9207314235. The cubic root of 122543145 is about 496.7024940498.

Adding to 122543145 its reverse (541345221), we get a palindrome (663888366).

The spelling of 122543145 in words is "one hundred twenty-two million, five hundred forty-three thousand, one hundred forty-five".