395121442 has 4 divisors (see below), whose sum is σ = 592682166. Its totient is φ = 197560720.

The previous prime is 395121431. The next prime is 395121481. The reversal of 395121442 is 244121593.

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., 380991361 + 14130081 = 19519^2 + 3759^2 .

It is a super-2 number, since 2×395121442² = 312241907856318728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98780359 + ... + 98780362.

Almost surely, 2^395121442 is an apocalyptic number.

395121442 is a deficient number, since it is larger than the sum of its proper divisors (197560724).

395121442 is a wasteful number, since it uses less digits than its factorization.

395121442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197560723.

The product of its digits is 8640, while the sum is 31.

The square root of 395121442 is about 19877.6618846382. The cubic root of 395121442 is about 733.7985783741.

The spelling of 395121442 in words is "three hundred ninety-five million, one hundred twenty-one thousand, four hundred forty-two".