122123745 has 24 divisors (see below), whose sum is σ = 212335656. Its totient is φ = 64931328.

The previous prime is 122123737. The next prime is 122123747. The reversal of 122123745 is 547321221.

It can be written as a sum of positive squares in 4 ways, for example, as 14130081 + 107993664 = 3759^2 + 10392^2 .

It is not a de Polignac number, because 122123745 - 2³ = 122123737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122123747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11139 + ... + 19191.

It is an arithmetic number, because the mean of its divisors is an integer number (8847319).

Almost surely, 2^122123745 is an apocalyptic number.

122123745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122123745 is a deficient number, since it is larger than the sum of its proper divisors (90211911).

122123745 is a wasteful number, since it uses less digits than its factorization.

122123745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401 (or 8398 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 122123745 is about 11050.9612704054. The cubic root of 122123745 is about 496.1351968972.

Adding to 122123745 its reverse (547321221), we get a palindrome (669444966).

The spelling of 122123745 in words is "one hundred twenty-two million, one hundred twenty-three thousand, seven hundred forty-five".