121310426 has 4 divisors (see below), whose sum is σ = 181965642. Its totient is φ = 60655212.

The previous prime is 121310411. The next prime is 121310429. The reversal of 121310426 is 624013121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98029801 + 23280625 = 9901^2 + 4825^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121310398 and 121310407.

It is not an unprimeable number, because it can be changed into a prime (121310429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30327605 + ... + 30327608.

Almost surely, 2^121310426 is an apocalyptic number.

121310426 is a deficient number, since it is larger than the sum of its proper divisors (60655216).

121310426 is an equidigital number, since it uses as much as digits as its factorization.

121310426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60655215.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 121310426 is about 11014.1012343268. The cubic root of 121310426 is about 495.0313567185.

Adding to 121310426 its reverse (624013121), we get a palindrome (745323547).

The spelling of 121310426 in words is "one hundred twenty-one million, three hundred ten thousand, four hundred twenty-six".