1203140505 has 16 divisors (see below), whose sum is σ = 2200028544. Its totient is φ = 550007040.

The previous prime is 1203140501. The next prime is 1203140539. The reversal of 1203140505 is 5050413021.

It is not a de Polignac number, because 1203140505 - 2² = 1203140501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1203140501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5729136 + ... + 5729345.

It is an arithmetic number, because the mean of its divisors is an integer number (137501784).

Almost surely, 2^1203140505 is an apocalyptic number.

1203140505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1203140505 is a deficient number, since it is larger than the sum of its proper divisors (996888039).

1203140505 is a wasteful number, since it uses less digits than its factorization.

1203140505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11458496.

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

The square root of 1203140505 is about 34686.3158176247. The cubic root of 1203140505 is about 1063.5847851419.

Adding to 1203140505 its reverse (5050413021), we get a palindrome (6253553526).

The spelling of 1203140505 in words is "one billion, two hundred three million, one hundred forty thousand, five hundred five".