42667790 has 32 divisors (see below), whose sum is σ = 88716384. Its totient is φ = 14602240.

The previous prime is 42667777. The next prime is 42667799. The reversal of 42667790 is 9776624.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42667799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9539 + ... + 13278.

It is an arithmetic number, because the mean of its divisors is an integer number (2772387).

Almost surely, 2^42667790 is an apocalyptic number.

42667790 is an abundant number, since it is smaller than the sum of its proper divisors (46048594).

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

42667790 is a wasteful number, since it uses less digits than its factorization.

42667790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22852.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 42667790 is about 6532.0586341520. The cubic root of 42667790 is about 349.4352524990.

The spelling of 42667790 in words is "forty-two million, six hundred sixty-seven thousand, seven hundred ninety".