393147542 has 8 divisors (see below), whose sum is σ = 624410856. Its totient is φ = 185010592.

The previous prime is 393147541. The next prime is 393147553. The reversal of 393147542 is 245741393.

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 = 393147496 and 393147505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393147541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5781548 + ... + 5781615.

It is an arithmetic number, because the mean of its divisors is an integer number (78051357).

Almost surely, 2^393147542 is an apocalyptic number.

393147542 is a deficient number, since it is larger than the sum of its proper divisors (231263314).

393147542 is a wasteful number, since it uses less digits than its factorization.

393147542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563182.

The product of its digits is 90720, while the sum is 38.

The square root of 393147542 is about 19827.9485070947. The cubic root of 393147542 is about 732.5745971158.

The spelling of 393147542 in words is "three hundred ninety-three million, one hundred forty-seven thousand, five hundred forty-two".