121440302 has 4 divisors (see below), whose sum is σ = 182160456. Its totient is φ = 60720150.

The previous prime is 121440281. The next prime is 121440307. The reversal of 121440302 is 203044121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440307) 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, 30360074 + ... + 30360077.

It is an arithmetic number, because the mean of its divisors is an integer number (45540114).

Almost surely, 2^121440302 is an apocalyptic number.

121440302 is a deficient number, since it is larger than the sum of its proper divisors (60720154).

121440302 is an equidigital number, since it uses as much as digits as its factorization.

121440302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60720153.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121440302 is about 11019.9955535381. The cubic root of 121440302 is about 495.2079553400.

Adding to 121440302 its reverse (203044121), we get a palindrome (324484423).

The spelling of 121440302 in words is "one hundred twenty-one million, four hundred forty thousand, three hundred two".