1980729042 has 32 divisors (see below), whose sum is σ = 4144711680. Its totient is φ = 629853840.

The previous prime is 1980729031. The next prime is 1980729053. The reversal of 1980729042 is 2409270891.

1980729042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1980729031) and next prime (1980729053).

It is a junction number, because it is equal to n+sod(n) for n = 1980728985 and 1980729003.

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, 33367 + ... + 71237.

It is an arithmetic number, because the mean of its divisors is an integer number (129522240).

Almost surely, 2^1980729042 is an apocalyptic number.

1980729042 is an abundant number, since it is smaller than the sum of its proper divisors (2163982638).

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

1980729042 is a wasteful number, since it uses less digits than its factorization.

1980729042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38278.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1980729042 is about 44505.3821689018. The cubic root of 1980729042 is about 1255.8613351353.

The spelling of 1980729042 in words is "one billion, nine hundred eighty million, seven hundred twenty-nine thousand, forty-two".