1603121442 has 32 divisors (see below), whose sum is σ = 3533183808. Its totient is φ = 481795776.

The previous prime is 1603121423. The next prime is 1603121453. The reversal of 1603121442 is 2441213061.

1603121442 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235633 + ... + 242340.

It is an arithmetic number, because the mean of its divisors is an integer number (110411994).

Almost surely, 2^1603121442 is an apocalyptic number.

1603121442 is an abundant number, since it is smaller than the sum of its proper divisors (1930062366).

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

1603121442 is a wasteful number, since it uses less digits than its factorization.

1603121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478034.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1603121442 is about 40038.9990134619. Note that the first 3 decimals coincide. The cubic root of 1603121442 is about 1170.3671971860.

It can be divided in two parts, 16031 and 21442, that added together give a palindrome (37473).

The spelling of 1603121442 in words is "one billion, six hundred three million, one hundred twenty-one thousand, four hundred forty-two".