1660543042 has 8 divisors (see below), whose sum is σ = 2491005132. Its totient is φ = 830208000.

The previous prime is 1660543021. The next prime is 1660543061. The reversal of 1660543042 is 2403450661.

It can be written as a sum of positive squares in 2 ways, for example, as 1495446241 + 165096801 = 38671^2 + 12849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1660543042² = 5514806388669227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1660542995 and 1660543013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14242 + ... + 59362.

Almost surely, 2^1660543042 is an apocalyptic number.

1660543042 is a deficient number, since it is larger than the sum of its proper divisors (830462090).

1660543042 is a wasteful number, since it uses less digits than its factorization.

1660543042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63524.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1660543042 is about 40749.7612508343. The cubic root of 1660543042 is about 1184.1772474972.

The spelling of 1660543042 in words is "one billion, six hundred sixty million, five hundred forty-three thousand, forty-two".