121973602 has 4 divisors (see below), whose sum is σ = 182960406. Its totient is φ = 60986800.

The previous prime is 121973581. The next prime is 121973609. The reversal of 121973602 is 206379121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89699841 + 32273761 = 9471^2 + 5681^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (121973609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30493399 + ... + 30493402.

Almost surely, 2^121973602 is an apocalyptic number.

121973602 is a deficient number, since it is larger than the sum of its proper divisors (60986804).

121973602 is an equidigital number, since it uses as much as digits as its factorization.

121973602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60986803.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 121973602 is about 11044.1659712266. The cubic root of 121973602 is about 495.9317918043.

The spelling of 121973602 in words is "one hundred twenty-one million, nine hundred seventy-three thousand, six hundred two".