393345021242 has 8 divisors (see below), whose sum is σ = 624724445556. Its totient is φ = 185103539392.

The previous prime is 393345021221. The next prime is 393345021269. The reversal of 393345021242 is 242120543393.

It can be written as a sum of positive squares in 2 ways, for example, as 392942176201 + 402845041 = 626851^2 + 20071^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 393345021196 and 393345021205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5784485573 + ... + 5784485640.

Almost surely, 2^393345021242 is an apocalyptic number.

393345021242 is a deficient number, since it is larger than the sum of its proper divisors (231379424314).

393345021242 is a wasteful number, since it uses less digits than its factorization.

393345021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11568971232.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 393345021242 in words is "three hundred ninety-three billion, three hundred forty-five million, twenty-one thousand, two hundred forty-two".