396127642 has 16 divisors (see below), whose sum is σ = 633159720. Its totient is φ = 185223168.

The previous prime is 396127639. The next prime is 396127649. The reversal of 396127642 is 246721693.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 396049801 + 77841 = 19901^2 + 279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 396127595 and 396127604.

It is not an unprimeable number, because it can be changed into a prime (396127649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31767 + ... + 42442.

Almost surely, 2^396127642 is an apocalyptic number.

396127642 is a deficient number, since it is larger than the sum of its proper divisors (237032078).

396127642 is a wasteful number, since it uses less digits than its factorization.

396127642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74385.

The product of its digits is 108864, while the sum is 40.

The square root of 396127642 is about 19902.9556096576. The cubic root of 396127642 is about 734.4209374662.

The spelling of 396127642 in words is "three hundred ninety-six million, one hundred twenty-seven thousand, six hundred forty-two".