42861657 has 8 divisors (see below), whose sum is σ = 57283200. Its totient is φ = 28507280.

The previous prime is 42861649. The next prime is 42861659. The reversal of 42861657 is 75616824.

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

It is a cyclic number.

It is not a de Polignac number, because 42861657 - 2³ = 42861649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42861659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15282 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2^42861657 is an apocalyptic number.

It is an amenable number.

42861657 is a deficient number, since it is larger than the sum of its proper divisors (14421543).

42861657 is a wasteful number, since it uses less digits than its factorization.

42861657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33583.

The product of its digits is 80640, while the sum is 39.

The square root of 42861657 is about 6546.8814713572. The cubic root of 42861657 is about 349.9636887500.

The spelling of 42861657 in words is "forty-two million, eight hundred sixty-one thousand, six hundred fifty-seven".