38700842 has 4 divisors (see below), whose sum is σ = 58051266. Its totient is φ = 19350420.

The previous prime is 38700839. The next prime is 38700863. The reversal of 38700842 is 24800783.

It is a Cunningham number, because it is equal to 6221²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24800783 = 7 ⋅3542969.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 1 = 6221^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38700799 and 38700808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9675209 + ... + 9675212.

Almost surely, 2^38700842 is an apocalyptic number.

38700842 is a deficient number, since it is larger than the sum of its proper divisors (19350424).

38700842 is a wasteful number, since it uses less digits than its factorization.

38700842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350423.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 38700842 is about 6221.0000803729. Note that the first 4 decimals coincide. The cubic root of 38700842 is about 338.2518168264.

The spelling of 38700842 in words is "thirty-eight million, seven hundred thousand, eight hundred forty-two".