42440344 has 16 divisors (see below), whose sum is σ = 79677000. Its totient is φ = 21193152.

The previous prime is 42440327. The next prime is 42440351. The reversal of 42440344 is 44304424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4332 + ... + 10180.

Almost surely, 2^42440344 is an apocalyptic number.

It is an amenable number.

42440344 is a deficient number, since it is larger than the sum of its proper divisors (37236656).

42440344 is a wasteful number, since it uses less digits than its factorization.

42440344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762 (or 6758 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 42440344 is about 6514.6253921465. The cubic root of 42440344 is about 348.8132431565.

Adding to 42440344 its reverse (44304424), we get a palindrome (86744768).

The spelling of 42440344 in words is "forty-two million, four hundred forty thousand, three hundred forty-four".