121626436 has 12 divisors (see below), whose sum is σ = 216335980. Its totient is φ = 59816160.

The previous prime is 121626431. The next prime is 121626443. The reversal of 121626436 is 634626121.

It can be written as a sum of positive squares in 2 ways, for example, as 65286400 + 56340036 = 8080^2 + 7506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121626398 and 121626407.

It is not an unprimeable number, because it can be changed into a prime (121626431) 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, 248991 + ... + 249478.

Almost surely, 2^121626436 is an apocalyptic number.

It is an amenable number.

121626436 is a deficient number, since it is larger than the sum of its proper divisors (94709544).

121626436 is a wasteful number, since it uses less digits than its factorization.

121626436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498534 (or 498532 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 121626436 is about 11028.4376046655. The cubic root of 121626436 is about 495.4608312614.

The spelling of 121626436 in words is "one hundred twenty-one million, six hundred twenty-six thousand, four hundred thirty-six".