1203155020 has 24 divisors (see below), whose sum is σ = 2552677344. Its totient is φ = 476299776.

The previous prime is 1203155003. The next prime is 1203155039. The reversal of 1203155020 is 205513021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308152 + ... + 312031.

It is an arithmetic number, because the mean of its divisors is an integer number (106361556).

Almost surely, 2^1203155020 is an apocalyptic number.

1203155020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203155020 is an abundant number, since it is smaller than the sum of its proper divisors (1349522324).

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

1203155020 is a wasteful number, since it uses less digits than its factorization.

1203155020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620289 (or 620287 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1203155020 is about 34686.5250493617. The cubic root of 1203155020 is about 1063.5890622459.

Adding to 1203155020 its reverse (205513021), we get a palindrome (1408668041).

The spelling of 1203155020 in words is "one billion, two hundred three million, one hundred fifty-five thousand, twenty".