122478 has 16 divisors (see below), whose sum is σ = 248400. Its totient is φ = 40256.

The previous prime is 122477. The next prime is 122489. The reversal of 122478 is 874221.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748 + ... + 896.

It is an arithmetic number, because the mean of its divisors is an integer number (15525).

2¹²²⁴⁷⁸ is an apocalyptic number.

122478 is an abundant number, since it is smaller than the sum of its proper divisors (125922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122478 is a wasteful number, since it uses less digits than its factorization.

122478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its digits is 896, while the sum is 24.

The square root of 122478 is about 349.9685700174. The cubic root of 122478 is about 49.6614461329.

Adding to 122478 its reverse (874221), we get a palindrome (996699).

The spelling of 122478 in words is "one hundred twenty-two thousand, four hundred seventy-eight".