494577442 has 4 divisors (see below), whose sum is σ = 741866166. Its totient is φ = 247288720.

The previous prime is 494577389. The next prime is 494577449. The reversal of 494577442 is 244775494.

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., 376398801 + 118178641 = 19401^2 + 10871^2 .

It is a super-2 number, since 2×494577442² = 489213692270526728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 494577392 and 494577401.

It is not an unprimeable number, because it can be changed into a prime (494577449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123644359 + ... + 123644362.

Almost surely, 2^494577442 is an apocalyptic number.

494577442 is a deficient number, since it is larger than the sum of its proper divisors (247288724).

494577442 is a wasteful number, since it uses less digits than its factorization.

494577442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247288723.

The product of its digits is 1128960, while the sum is 46.

The square root of 494577442 is about 22239.0971489402. The cubic root of 494577442 is about 790.8208324636.

The spelling of 494577442 in words is "four hundred ninety-four million, five hundred seventy-seven thousand, four hundred forty-two".