642160126 has 8 divisors (see below), whose sum is σ = 968562504. Its totient is φ = 319305960.

The previous prime is 642160117. The next prime is 642160153. The reversal of 642160126 is 621061246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 642160094 and 642160103.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 886600 + ... + 887323.

It is an arithmetic number, because the mean of its divisors is an integer number (121070313).

Almost surely, 2^642160126 is an apocalyptic number.

642160126 is a deficient number, since it is larger than the sum of its proper divisors (326402378).

642160126 is a wasteful number, since it uses less digits than its factorization.

642160126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774106.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 642160126 is about 25340.8785561985. The cubic root of 642160126 is about 862.7423394082.

The spelling of 642160126 in words is "six hundred forty-two million, one hundred sixty thousand, one hundred twenty-six".