42871601 has 2 divisors, whose sum is σ = 42871602. Its totient is φ = 42871600.

The previous prime is 42871597. The next prime is 42871663. The reversal of 42871601 is 10617824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 361201 = 6520^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 42871601 - 2² = 42871597 is a prime.

It is not a weakly prime, because it can be changed into another prime (42871001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21435800 + 21435801.

It is an arithmetic number, because the mean of its divisors is an integer number (21435801).

Almost surely, 2^42871601 is an apocalyptic number.

It is an amenable number.

42871601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42871601 is an equidigital number, since it uses as much as digits as its factorization.

42871601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 42871601 is about 6547.6408728641. The cubic root of 42871601 is about 349.9907507760.

The spelling of 42871601 in words is "forty-two million, eight hundred seventy-one thousand, six hundred one".