121443634 has 32 divisors (see below), whose sum is σ = 205680384. Its totient is φ = 53359680.

The previous prime is 121443607. The next prime is 121443659. The reversal of 121443634 is 436344121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185652 + ... + 186304.

It is an arithmetic number, because the mean of its divisors is an integer number (6427512).

Almost surely, 2^121443634 is an apocalyptic number.

121443634 is a deficient number, since it is larger than the sum of its proper divisors (84236750).

121443634 is a wasteful number, since it uses less digits than its factorization.

121443634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002.

The product of its digits is 6912, while the sum is 28.

The square root of 121443634 is about 11020.1467322355. The cubic root of 121443634 is about 495.2124843632.

Adding to 121443634 its reverse (436344121), we get a palindrome (557787755).

The spelling of 121443634 in words is "one hundred twenty-one million, four hundred forty-three thousand, six hundred thirty-four".