248666842 has 4 divisors (see below), whose sum is σ = 373000266. Its totient is φ = 124333420.

The previous prime is 248666819. The next prime is 248666843.

248666842 is nontrivially palindromic in base 10.

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., 234671761 + 13995081 = 15319^2 + 3741^2 .

It is a junction number, because it is equal to n+sod(n) for n = 248666792 and 248666801.

It is not an unprimeable number, because it can be changed into a prime (248666843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62166709 + ... + 62166712.

Almost surely, 2^248666842 is an apocalyptic number.

248666842 is a deficient number, since it is larger than the sum of its proper divisors (124333424).

248666842 is a wasteful number, since it uses less digits than its factorization.

248666842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124333423.

The product of its digits is 884736, while the sum is 46.

The square root of 248666842 is about 15769.1737893905. The cubic root of 248666842 is about 628.8387460154.

The spelling of 248666842 in words is "two hundred forty-eight million, six hundred sixty-six thousand, eight hundred forty-two".