1642704120 has 96 divisors (see below), whose sum is σ = 5387896800. Its totient is φ = 434025216.

The previous prime is 1642704047. The next prime is 1642704127. The reversal of 1642704120 is 214072461.

1642704120 is a `hidden beast` number, since 1 + 642 + 7 + 0 + 4 + 12 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642704127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18309 + ... + 60171.

It is an arithmetic number, because the mean of its divisors is an integer number (56123925).

Almost surely, 2^1642704120 is an apocalyptic number.

1642704120 is a gapful number since it is divisible by the number (10) 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 1642704120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2693948400).

1642704120 is an abundant number, since it is smaller than the sum of its proper divisors (3745192680).

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

1642704120 is a wasteful number, since it uses less digits than its factorization.

1642704120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41989 (or 41982 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1642704120 is about 40530.2864534659. The cubic root of 1642704120 is about 1179.9215020079.

Adding to 1642704120 its reverse (214072461), we get a palindrome (1856776581).

The spelling of 1642704120 in words is "one billion, six hundred forty-two million, seven hundred four thousand, one hundred twenty".