371780842 has 4 divisors (see below), whose sum is σ = 557671266. Its totient is φ = 185890420.

The previous prime is 371780839. The next prime is 371780879. The reversal of 371780842 is 248087173.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248087173 = 13127 ⋅18899.

It can be written as a sum of positive squares in only one way, i.e., 217002361 + 154778481 = 14731^2 + 12441^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 371780795 and 371780804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92945209 + ... + 92945212.

Almost surely, 2^371780842 is an apocalyptic number.

371780842 is a deficient number, since it is larger than the sum of its proper divisors (185890424).

371780842 is a wasteful number, since it uses less digits than its factorization.

371780842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185890423.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 371780842 is about 19281.6192784735. The cubic root of 371780842 is about 719.0553725756.

The spelling of 371780842 in words is "three hundred seventy-one million, seven hundred eighty thousand, eight hundred forty-two".