40442292 has 72 divisors (see below), whose sum is σ = 113131200. Its totient is φ = 12078720.

The previous prime is 40442273. The next prime is 40442323. The reversal of 40442292 is 29224404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28209 + ... + 29607.

Almost surely, 2^40442292 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 40442292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56565600).

40442292 is an abundant number, since it is smaller than the sum of its proper divisors (72688908).

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

40442292 is a wasteful number, since it uses less digits than its factorization.

40442292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40442292 is about 6359.4254457459. The cubic root of 40442292 is about 343.2510861733.

Adding to 40442292 its reverse (29224404), we get a palindrome (69666696).

It can be divided in two parts, 4044 and 2292, that added together give a palindrome (6336).

The spelling of 40442292 in words is "forty million, four hundred forty-two thousand, two hundred ninety-two".