38440142 has 8 divisors (see below), whose sum is σ = 62095656. Its totient is φ = 17741592.

The previous prime is 38440141. The next prime is 38440159. The reversal of 38440142 is 24104483.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1478467 = 38440142 / (3 + 8 + 4 + 4 + 0 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38440141) 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, 739208 + ... + 739259.

It is an arithmetic number, because the mean of its divisors is an integer number (7761957).

Almost surely, 2^38440142 is an apocalyptic number.

38440142 is a deficient number, since it is larger than the sum of its proper divisors (23655514).

38440142 is a wasteful number, since it uses less digits than its factorization.

38440142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478482.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 38440142 is about 6200.0114516023. The cubic root of 38440142 is about 337.4905844653.

The spelling of 38440142 in words is "thirty-eight million, four hundred forty thousand, one hundred forty-two".