42780571 has 8 divisors (see below), whose sum is σ = 46080320. Its totient is φ = 39585672.

The previous prime is 42780541. The next prime is 42780601. The reversal of 42780571 is 17508724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42780541) and next prime (42780601).

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 42780571 - 2⁷ = 42780443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42780541) 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, 25365 + ... + 26998.

It is an arithmetic number, because the mean of its divisors is an integer number (5760040).

Almost surely, 2^42780571 is an apocalyptic number.

42780571 is a deficient number, since it is larger than the sum of its proper divisors (3299749).

42780571 is a wasteful number, since it uses less digits than its factorization.

42780571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52425.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 42780571 is about 6540.6858203097. The cubic root of 42780571 is about 349.7428614715.

The spelling of 42780571 in words is "forty-two million, seven hundred eighty thousand, five hundred seventy-one".