42942660 has 96 divisors (see below), whose sum is σ = 127948800. Its totient is φ = 10730880.

The previous prime is 42942643. The next prime is 42942671. The reversal of 42942660 is 6624924.

42942660 = T₄₁₁ + T₄₁₂ + ... + T₆₈₈.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158325 + ... + 158595.

It is an arithmetic number, because the mean of its divisors is an integer number (1332800).

Almost surely, 2^42942660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42942660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63974400).

42942660 is an abundant number, since it is smaller than the sum of its proper divisors (85006140).

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

42942660 is a wasteful number, since it uses less digits than its factorization.

42942660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42942660 is about 6553.0649317705. The cubic root of 42942660 is about 350.1840120825.

The spelling of 42942660 in words is "forty-two million, nine hundred forty-two thousand, six hundred sixty".