121426436 has 12 divisors (see below), whose sum is σ = 214446540. Its totient is φ = 60156000.

The previous prime is 121426433. The next prime is 121426441. The reversal of 121426436 is 634624121.

It can be written as a sum of positive squares in 2 ways, for example, as 40246336 + 81180100 = 6344^2 + 9010^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121426399 and 121426408.

It is not an unprimeable number, because it can be changed into a prime (121426433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138815 + ... + 139686.

It is an arithmetic number, because the mean of its divisors is an integer number (17870545).

Almost surely, 2^121426436 is an apocalyptic number.

It is an amenable number.

121426436 is a deficient number, since it is larger than the sum of its proper divisors (93020104).

121426436 is a wasteful number, since it uses less digits than its factorization.

121426436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278614 (or 278612 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 121426436 is about 11019.3664064682. The cubic root of 121426436 is about 495.1891070808.

The spelling of 121426436 in words is "one hundred twenty-one million, four hundred twenty-six thousand, four hundred thirty-six".