1203015540 has 48 divisors (see below), whose sum is σ = 3566590272. Its totient is φ = 301933056.

The previous prime is 1203015493. The next prime is 1203015553. The reversal of 1203015540 is 455103021.

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 15 ways as a sum of consecutive naturals, for example, 588694 + ... + 590733.

It is an arithmetic number, because the mean of its divisors is an integer number (74303964).

Almost surely, 2^1203015540 is an apocalyptic number.

1203015540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203015540 is an abundant number, since it is smaller than the sum of its proper divisors (2363574732).

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

1203015540 is a wasteful number, since it uses less digits than its factorization.

1203015540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179456 (or 1179454 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1203015540 is about 34684.5144120543. The cubic root of 1203015540 is about 1063.5479605499.

Adding to 1203015540 its reverse (455103021), we get a palindrome (1658118561).

The spelling of 1203015540 in words is "one billion, two hundred three million, fifteen thousand, five hundred forty".