394212442 has 24 divisors (see below), whose sum is σ = 641625084. Its totient is φ = 181569024.

The previous prime is 394212419. The next prime is 394212443. The reversal of 394212442 is 244212493.

It can be written as a sum of positive squares in 6 ways, for example, as 29822521 + 364389921 = 5461^2 + 19089^2 .

It is not an unprimeable number, because it can be changed into a prime (394212443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226608 + ... + 228340.

Almost surely, 2^394212442 is an apocalyptic number.

394212442 is a deficient number, since it is larger than the sum of its proper divisors (247412642).

394212442 is a wasteful number, since it uses less digits than its factorization.

394212442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2421 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 394212442 is about 19854.7838567938. The cubic root of 394212442 is about 733.2354307778.

It can be divided in two parts, 3942 and 12442, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 394212442 in words is "three hundred ninety-four million, two hundred twelve thousand, four hundred forty-two".