38145242 has 4 divisors (see below), whose sum is σ = 57217866. Its totient is φ = 19072620.

The previous prime is 38145241. The next prime is 38145271. The reversal of 38145242 is 24254183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24254183 = 31 ⋅782393.

It can be written as a sum of positive squares in only one way, i.e., 29495761 + 8649481 = 5431^2 + 2941^2 .

It is not an unprimeable number, because it can be changed into a prime (38145241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9536309 + ... + 9536312.

Almost surely, 2^38145242 is an apocalyptic number.

38145242 is a deficient number, since it is larger than the sum of its proper divisors (19072624).

38145242 is a wasteful number, since it uses less digits than its factorization.

38145242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19072623.

The product of its digits is 7680, while the sum is 29.

The square root of 38145242 is about 6176.1834493480. The cubic root of 38145242 is about 336.6253294779.

The spelling of 38145242 in words is "thirty-eight million, one hundred forty-five thousand, two hundred forty-two".