122431406 has 16 divisors (see below), whose sum is σ = 190574208. Its totient is φ = 58947000.

The previous prime is 122431403. The next prime is 122431427. The reversal of 122431406 is 604134221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122431403) 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, 3920 + ... + 16131.

It is an arithmetic number, because the mean of its divisors is an integer number (11910888).

Almost surely, 2^122431406 is an apocalyptic number.

122431406 is a deficient number, since it is larger than the sum of its proper divisors (68142802).

122431406 is a wasteful number, since it uses less digits than its factorization.

122431406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20167.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 122431406 is about 11064.8726156246. The cubic root of 122431406 is about 496.5514780742.

Adding to 122431406 its reverse (604134221), we get a palindrome (726565627).

The spelling of 122431406 in words is "one hundred twenty-two million, four hundred thirty-one thousand, four hundred six".