1203121340 has 12 divisors (see below), whose sum is σ = 2526554856. Its totient is φ = 481248528.

The previous prime is 1203121321. The next prime is 1203121351. The reversal of 1203121340 is 431213021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30078014 + ... + 30078053.

It is an arithmetic number, because the mean of its divisors is an integer number (210546238).

Almost surely, 2^1203121340 is an apocalyptic number.

1203121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203121340 is an abundant number, since it is smaller than the sum of its proper divisors (1323433516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203121340 is a wasteful number, since it uses less digits than its factorization.

1203121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60156076 (or 60156074 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1203121340 is about 34686.0395548411. The cubic root of 1203121340 is about 1063.5791377797.

Adding to 1203121340 its reverse (431213021), we get a palindrome (1634334361).

The spelling of 1203121340 in words is "one billion, two hundred three million, one hundred twenty-one thousand, three hundred forty".