42684001 has 4 divisors (see below), whose sum is σ = 42703252. Its totient is φ = 42664752.

The previous prime is 42683999. The next prime is 42684011. The reversal of 42684001 is 10048624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 33074001 = 3100^2 + 5751^2 .

It is a cyclic number.

It is not a de Polignac number, because 42684001 - 2¹ = 42683999 is a prime.

It is a super-3 number, since 3×42684001³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42684011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5790 + ... + 10903.

It is an arithmetic number, because the mean of its divisors is an integer number (10675813).

Almost surely, 2^42684001 is an apocalyptic number.

It is an amenable number.

42684001 is a deficient number, since it is larger than the sum of its proper divisors (19251).

42684001 is a wasteful number, since it uses less digits than its factorization.

42684001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 42684001 is about 6533.2993961704. The cubic root of 42684001 is about 349.4795011592.

The spelling of 42684001 in words is "forty-two million, six hundred eighty-four thousand, one".