42366992 has 40 divisors (see below), whose sum is σ = 87773400. Its totient is φ = 19740672.

The previous prime is 42366991. The next prime is 42367021. The reversal of 42366992 is 29966324.

It can be written as a sum of positive squares in 4 ways, for example, as 5837056 + 36529936 = 2416^2 + 6044^2 .

It is a super-2 number, since 2×42366992² = 3589924022256128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42366991) 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, 28934 + ... + 30362.

It is an arithmetic number, because the mean of its divisors is an integer number (2194335).

Almost surely, 2^42366992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42366992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43886700).

42366992 is an abundant number, since it is smaller than the sum of its proper divisors (45406408).

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

42366992 is a wasteful number, since it uses less digits than its factorization.

42366992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563 (or 1557 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 42366992 is about 6508.9931633087. The cubic root of 42366992 is about 348.6121695127.

The spelling of 42366992 in words is "forty-two million, three hundred sixty-six thousand, nine hundred ninety-two".