121545436 has 6 divisors (see below), whose sum is σ = 212704520. Its totient is φ = 60772716.

The previous prime is 121545421. The next prime is 121545497. The reversal of 121545436 is 634545121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121545398 and 121545407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15193176 + ... + 15193183.

Almost surely, 2^121545436 is an apocalyptic number.

It is an amenable number.

121545436 is a deficient number, since it is larger than the sum of its proper divisors (91159084).

121545436 is a wasteful number, since it uses less digits than its factorization.

121545436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30386363 (or 30386361 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 121545436 is about 11024.7646686902. The cubic root of 121545436 is about 495.3508188853.

The spelling of 121545436 in words is "one hundred twenty-one million, five hundred forty-five thousand, four hundred thirty-six".