823238142 has 8 divisors (see below), whose sum is σ = 1646476296. Its totient is φ = 274412712.

The previous prime is 823238131. The next prime is 823238153. The reversal of 823238142 is 241832328.

It is an interprime number because it is at equal distance from previous prime (823238131) and next prime (823238153).

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

823238142 is an admirable number.

It is a super-2 number, since 2×823238142² = 1355442076887224328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68603173 + ... + 68603184.

It is an arithmetic number, because the mean of its divisors is an integer number (205809537).

Almost surely, 2^823238142 is an apocalyptic number.

823238142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823238142 is a wasteful number, since it uses less digits than its factorization.

823238142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137206362.

The product of its digits is 18432, while the sum is 33.

The square root of 823238142 is about 28692.1268294980. The cubic root of 823238142 is about 937.2206046713.

The spelling of 823238142 in words is "eight hundred twenty-three million, two hundred thirty-eight thousand, one hundred forty-two".