1203255440 has 40 divisors (see below), whose sum is σ = 2844996480. Its totient is φ = 473142656.

The previous prime is 1203255407. The next prime is 1203255451. The reversal of 1203255440 is 445523021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122744 + ... + 132183.

It is an arithmetic number, because the mean of its divisors is an integer number (71124912).

Almost surely, 2^1203255440 is an apocalyptic number.

1203255440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203255440 is an abundant number, since it is smaller than the sum of its proper divisors (1641741040).

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

1203255440 is a wasteful number, since it uses less digits than its factorization.

1203255440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254999 (or 254993 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1203255440 is about 34687.9725553397. The cubic root of 1203255440 is about 1063.6186518500.

Adding to 1203255440 its reverse (445523021), we get a palindrome (1648778461).

The spelling of 1203255440 in words is "one billion, two hundred three million, two hundred fifty-five thousand, four hundred forty".