1659047242 has 32 divisors (see below), whose sum is σ = 2602702080. Its totient is φ = 792529920.

The previous prime is 1659047237. The next prime is 1659047251. The reversal of 1659047242 is 2427409561.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1659047195 and 1659047204.

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, 766642 + ... + 768802.

It is an arithmetic number, because the mean of its divisors is an integer number (81334440).

Almost surely, 2^1659047242 is an apocalyptic number.

1659047242 is a deficient number, since it is larger than the sum of its proper divisors (943654838).

1659047242 is a wasteful number, since it uses less digits than its factorization.

1659047242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1659047242 is about 40731.4036340512. The cubic root of 1659047242 is about 1183.8215758079.

The spelling of 1659047242 in words is "one billion, six hundred fifty-nine million, forty-seven thousand, two hundred forty-two".