42661850 has 72 divisors (see below), whose sum is σ = 100761408. Its totient is φ = 13288800.

The previous prime is 42661807. The next prime is 42661877. The reversal of 42661850 is 5816624.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26159 + ... + 27741.

It is an arithmetic number, because the mean of its divisors is an integer number (1399464).

Almost surely, 2^42661850 is an apocalyptic number.

42661850 is an abundant number, since it is smaller than the sum of its proper divisors (58099558).

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

42661850 is a wasteful number, since it uses less digits than its factorization.

42661850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 42661850 is about 6531.6039377782. The cubic root of 42661850 is about 349.4190361937.

It can be divided in two parts, 4266 and 1850, that added together give a palindrome (6116).

The spelling of 42661850 in words is "forty-two million, six hundred sixty-one thousand, eight hundred fifty".