1203553420 has 24 divisors (see below), whose sum is σ = 2676137184. Its totient is φ = 453102336.

The previous prime is 1203553397. The next prime is 1203553451. The reversal of 1203553420 is 243553021.

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, 1769592 + ... + 1770271.

It is an arithmetic number, because the mean of its divisors is an integer number (111505716).

Almost surely, 2^1203553420 is an apocalyptic number.

1203553420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203553420 is an abundant number, since it is smaller than the sum of its proper divisors (1472583764).

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

1203553420 is a wasteful number, since it uses less digits than its factorization.

1203553420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539889 (or 3539887 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1203553420 is about 34692.2674381482. The cubic root of 1203553420 is about 1063.7064444933.

The spelling of 1203553420 in words is "one billion, two hundred three million, five hundred fifty-three thousand, four hundred twenty".