397247342 has 12 divisors (see below), whose sum is σ = 601860048. Its totient is φ = 196647000.

The previous prime is 397247341. The next prime is 397247351. The reversal of 397247342 is 243742793.

It is a self number, because there is not a number n which added to its sum of digits gives 397247342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397247341) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 10667 + ... + 30137.

It is an arithmetic number, because the mean of its divisors is an integer number (50155004).

Almost surely, 2^397247342 is an apocalyptic number.

397247342 is a deficient number, since it is larger than the sum of its proper divisors (204612706).

397247342 is a wasteful number, since it uses less digits than its factorization.

397247342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19675 (or 19574 counting only the distinct ones).

The product of its digits is 254016, while the sum is 41.

The square root of 397247342 is about 19931.0647482767. The cubic root of 397247342 is about 735.1122613786.

The spelling of 397247342 in words is "three hundred ninety-seven million, two hundred forty-seven thousand, three hundred forty-two".