393545021242 has 4 divisors (see below), whose sum is σ = 590317531866. Its totient is φ = 196772510620.

The previous prime is 393545021237. The next prime is 393545021279. The reversal of 393545021242 is 242120545393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 360217232761 + 33327788481 = 600181^2 + 182559^2 .

It is a junction number, because it is equal to n+sod(n) for n = 393545021195 and 393545021204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98386255309 + ... + 98386255312.

Almost surely, 2^393545021242 is an apocalyptic number.

393545021242 is a deficient number, since it is larger than the sum of its proper divisors (196772510624).

393545021242 is a wasteful number, since it uses less digits than its factorization.

393545021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196772510623.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 393545021242 in words is "three hundred ninety-three billion, five hundred forty-five million, twenty-one thousand, two hundred forty-two".