819474542 has 8 divisors (see below), whose sum is σ = 1238184576. Its totient is φ = 406746352.

The previous prime is 819474457. The next prime is 819474619. The reversal of 819474542 is 245474918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×819474542² = 1343077049972219528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 819474493 and 819474502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495118 + ... + 1495665.

It is an arithmetic number, because the mean of its divisors is an integer number (154773072).

Almost surely, 2^819474542 is an apocalyptic number.

819474542 is a deficient number, since it is larger than the sum of its proper divisors (418710034).

819474542 is a wasteful number, since it uses less digits than its factorization.

819474542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990922.

The product of its digits is 322560, while the sum is 44.

The square root of 819474542 is about 28626.4657615990. The cubic root of 819474542 is about 935.7901913344.

The spelling of 819474542 in words is "eight hundred nineteen million, four hundred seventy-four thousand, five hundred forty-two".