38049142 has 4 divisors (see below), whose sum is σ = 57073716. Its totient is φ = 19024570.

The previous prime is 38049139. The next prime is 38049149. The reversal of 38049142 is 24194083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24194083 = 3119 ⋅7757.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38049149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9512284 + ... + 9512287.

It is an arithmetic number, because the mean of its divisors is an integer number (14268429).

Almost surely, 2^38049142 is an apocalyptic number.

38049142 is a deficient number, since it is larger than the sum of its proper divisors (19024574).

38049142 is a wasteful number, since it uses less digits than its factorization.

38049142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19024573.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 38049142 is about 6168.3986576745. The cubic root of 38049142 is about 336.3424029849.

The spelling of 38049142 in words is "thirty-eight million, forty-nine thousand, one hundred forty-two".