42409266 has 16 divisors (see below), whose sum is σ = 86791584. Its totient is φ = 13807584.

The previous prime is 42409261. The next prime is 42409267. The reversal of 42409266 is 66290424.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42409261) 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, 81931 + ... + 82446.

It is an arithmetic number, because the mean of its divisors is an integer number (5424474).

Almost surely, 2^42409266 is an apocalyptic number.

42409266 is an abundant number, since it is smaller than the sum of its proper divisors (44382318).

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

42409266 is a wasteful number, since it uses less digits than its factorization.

42409266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164425.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42409266 is about 6512.2397068904. The cubic root of 42409266 is about 348.7280799676.

The spelling of 42409266 in words is "forty-two million, four hundred nine thousand, two hundred sixty-six".