42440254 has 8 divisors (see below), whose sum is σ = 63755640. Its totient is φ = 21188376.

The previous prime is 42440249. The next prime is 42440257. The reversal of 42440254 is 45204424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14169 + ... + 16900.

It is an arithmetic number, because the mean of its divisors is an integer number (7969455).

Almost surely, 2^42440254 is an apocalyptic number.

42440254 is a deficient number, since it is larger than the sum of its proper divisors (21315386).

42440254 is a wasteful number, since it uses less digits than its factorization.

42440254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31754.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 42440254 is about 6514.6184846083. The cubic root of 42440254 is about 348.8129965891.

Adding to 42440254 its reverse (45204424), we get a palindrome (87644678).

The spelling of 42440254 in words is "forty-two million, four hundred forty thousand, two hundred fifty-four".