493772842 has 4 divisors (see below), whose sum is σ = 740659266. Its totient is φ = 246886420.

The previous prime is 493772819. The next prime is 493772843. The reversal of 493772842 is 248277394.

It is a Cunningham number, because it is equal to 22221²+1.

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., 493772841 + 1 = 22221^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 493772792 and 493772801.

It is not an unprimeable number, because it can be changed into a prime (493772843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123443209 + ... + 123443212.

Almost surely, 2^493772842 is an apocalyptic number.

493772842 is a deficient number, since it is larger than the sum of its proper divisors (246886424).

493772842 is a wasteful number, since it uses less digits than its factorization.

493772842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246886423.

The product of its digits is 677376, while the sum is 46.

The square root of 493772842 is about 22221.0000225012. Note that the first 4 decimals coincide. The cubic root of 493772842 is about 790.3917525054.

The spelling of 493772842 in words is "four hundred ninety-three million, seven hundred seventy-two thousand, eight hundred forty-two".