42405670 has 8 divisors (see below), whose sum is σ = 76330224. Its totient is φ = 16962264.

The previous prime is 42405647. The next prime is 42405677. The reversal of 42405670 is 7650424.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42405677) 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, 2120274 + ... + 2120293.

It is an arithmetic number, because the mean of its divisors is an integer number (9541278).

Almost surely, 2^42405670 is an apocalyptic number.

42405670 is a deficient number, since it is larger than the sum of its proper divisors (33924554).

42405670 is a wasteful number, since it uses less digits than its factorization.

42405670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240574.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 42405670 is about 6511.9636055494. The cubic root of 42405670 is about 348.7182231467.

The spelling of 42405670 in words is "forty-two million, four hundred five thousand, six hundred seventy".