121440140302 has 32 divisors (see below), whose sum is σ = 197427797280. Its totient is φ = 55691159040.

The previous prime is 121440140299. The next prime is 121440140387. The reversal of 121440140302 is 203041044121.

It is a happy number.

It is a congruent number.

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, 6138058 + ... + 6157810.

It is an arithmetic number, because the mean of its divisors is an integer number (6169618665).

Almost surely, 2^121440140302 is an apocalyptic number.

121440140302 is a deficient number, since it is larger than the sum of its proper divisors (75987656978).

121440140302 is a wasteful number, since it uses less digits than its factorization.

121440140302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21268.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 121440140302 its reverse (203041044121), we get a palindrome (324481184423).

The spelling of 121440140302 in words is "one hundred twenty-one billion, four hundred forty million, one hundred forty thousand, three hundred two".