38424242 has 4 divisors (see below), whose sum is σ = 57636366. Its totient is φ = 19212120.

The previous prime is 38424209. The next prime is 38424247. The reversal of 38424242 is 24242483.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 982081 = 6119^2 + 991^2 .

It is not an unprimeable number, because it can be changed into a prime (38424247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9606059 + ... + 9606062.

Almost surely, 2^38424242 is an apocalyptic number.

38424242 is a deficient number, since it is larger than the sum of its proper divisors (19212124).

38424242 is a wasteful number, since it uses less digits than its factorization.

38424242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19212123.

The product of its digits is 12288, while the sum is 29.

The square root of 38424242 is about 6198.7290632839. The cubic root of 38424242 is about 337.4440459594. Note that the first 3 decimals are identical.

The spelling of 38424242 in words is "thirty-eight million, four hundred twenty-four thousand, two hundred forty-two".