393542 has 4 divisors (see below), whose sum is σ = 590316. Its totient is φ = 196770.

The previous prime is 393541. The next prime is 393551. The reversal of 393542 is 245393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245393 = 211 ⋅1163.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98384 + ... + 98387.

It is an arithmetic number, because the mean of its divisors is an integer number (147579).

2³⁹³⁵⁴² is an apocalyptic number.

393542 is a deficient number, since it is larger than the sum of its proper divisors (196774).

393542 is a wasteful number, since it uses less digits than its factorization.

393542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196773.

The product of its digits is 3240, while the sum is 26.

The square root of 393542 is about 627.3292596396. The cubic root of 393542 is about 73.2819520704.

The spelling of 393542 in words is "three hundred ninety-three thousand, five hundred forty-two".