42065670 has 32 divisors (see below), whose sum is σ = 103688928. Its totient is φ = 10914048.

The previous prime is 42065669. The next prime is 42065741. The reversal of 42065670 is 7656024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17839 + ... + 20058.

It is an arithmetic number, because the mean of its divisors is an integer number (3240279).

Almost surely, 2^42065670 is an apocalyptic number.

42065670 is an abundant number, since it is smaller than the sum of its proper divisors (61623258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42065670 is a wasteful number, since it uses less digits than its factorization.

42065670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37944.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 42065670 is about 6485.8052699723. The cubic root of 42065670 is about 347.7837373462.

The spelling of 42065670 in words is "forty-two million, sixty-five thousand, six hundred seventy".