203121142013040 has 160 divisors (see below), whose sum is σ = 655966252972800. Its totient is φ = 51948854691840.

The previous prime is 203121142013021. The next prime is 203121142013107. The reversal of 203121142013040 is 40310241121302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 203121142013040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174354970 + ... + 175516089.

It is an arithmetic number, because the mean of its divisors is an integer number (4099789081080).

Almost surely, 2^{203121142013040} is an apocalyptic number.

203121142013040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203121142013040 is an abundant number, since it is smaller than the sum of its proper divisors (452845110959760).

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

203121142013040 is a wasteful number, since it uses less digits than its factorization.

203121142013040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349871175 (or 349871169 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 203121142013040 its reverse (40310241121302), we get a palindrome (243431383134342).

The spelling of 203121142013040 in words is "two hundred three trillion, one hundred twenty-one billion, one hundred forty-two million, thirteen thousand, forty".