1703421232128 has 352 divisors, whose sum is σ = 6289515909120. Its totient is φ = 442446520320.

The previous prime is 1703421232081. The next prime is 1703421232153. The reversal of 1703421232128 is 8212321243071.

1703421232128 is a `hidden beast` number, since 1 + 70 + 34 + 212 + 321 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1703421232092 and 1703421232101.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1728825 + ... + 2528967.

Almost surely, 2^{1703421232128} is an apocalyptic number.

1703421232128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1703421232128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144757954560).

1703421232128 is an abundant number, since it is smaller than the sum of its proper divisors (4586094676992).

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

1703421232128 is a wasteful number, since it uses less digits than its factorization.

1703421232128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800190 (or 800166 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 1703421232128 its reverse (8212321243071), we get a palindrome (9915742475199).

The spelling of 1703421232128 in words is "one trillion, seven hundred three billion, four hundred twenty-one million, two hundred thirty-two thousand, one hundred twenty-eight".