1709820942 has 16 divisors (see below), whose sum is σ = 3422716752. Its totient is φ = 569427840.

The previous prime is 1709820929. The next prime is 1709820953. The reversal of 1709820942 is 2490289071.

1709820942 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1709820894 and 1709820903.

It is a congruent number.

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, 120859 + ... + 134262.

It is an arithmetic number, because the mean of its divisors is an integer number (213919797).

Almost surely, 2^1709820942 is an apocalyptic number.

1709820942 is an abundant number, since it is smaller than the sum of its proper divisors (1712895810).

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

1709820942 is a wasteful number, since it uses less digits than its factorization.

1709820942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256243.

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

The square root of 1709820942 is about 41349.9811608180. The cubic root of 1709820942 is about 1195.7770410028. Note that the first 3 decimals are identical.

The spelling of 1709820942 in words is "one billion, seven hundred nine million, eight hundred twenty thousand, nine hundred forty-two".