121234436 has 6 divisors (see below), whose sum is σ = 212160270. Its totient is φ = 60617216.

The previous prime is 121234433. The next prime is 121234447. The reversal of 121234436 is 634432121.

It can be written as a sum of positive squares in only one way, i.e., 121132036 + 102400 = 11006^2 + 320^2 .

It is not an unprimeable number, because it can be changed into a prime (121234433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15154301 + ... + 15154308.

It is an arithmetic number, because the mean of its divisors is an integer number (35360045).

Almost surely, 2^121234436 is an apocalyptic number.

It is an amenable number.

121234436 is a deficient number, since it is larger than the sum of its proper divisors (90925834).

121234436 is a wasteful number, since it uses less digits than its factorization.

121234436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30308613 (or 30308611 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 121234436 is about 11010.6510252573. The cubic root of 121234436 is about 494.9279710178.

Adding to 121234436 its reverse (634432121), we get a palindrome (755666557).

The spelling of 121234436 in words is "one hundred twenty-one million, two hundred thirty-four thousand, four hundred thirty-six".