2042147661 has 32 divisors (see below), whose sum is σ = 2996352000. Its totient is φ = 1231549440.

The previous prime is 2042147633. The next prime is 2042147669. The reversal of 2042147661 is 1667412402.

It is not a de Polignac number, because 2042147661 - 2⁵ = 2042147629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042147669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231235 + ... + 239903.

It is an arithmetic number, because the mean of its divisors is an integer number (93636000).

Almost surely, 2^2042147661 is an apocalyptic number.

It is an amenable number.

2042147661 is a deficient number, since it is larger than the sum of its proper divisors (954204339).

2042147661 is a wasteful number, since it uses less digits than its factorization.

2042147661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8869.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2042147661 is about 45190.1279152870. The cubic root of 2042147661 is about 1268.7100509281.

The spelling of 2042147661 in words is "two billion, forty-two million, one hundred forty-seven thousand, six hundred sixty-one".