1642123375 has 16 divisors (see below), whose sum is σ = 2050697376. Its totient is φ = 1312848000.

The previous prime is 1642123367. The next prime is 1642123391. The reversal of 1642123375 is 5733212461.

It is not a de Polignac number, because 1642123375 - 2³ = 1642123367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642123375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250135 + ... + 256615.

It is an arithmetic number, because the mean of its divisors is an integer number (128168586).

Almost surely, 2^1642123375 is an apocalyptic number.

1642123375 is a deficient number, since it is larger than the sum of its proper divisors (408574001).

1642123375 is an equidigital number, since it uses as much as digits as its factorization.

1642123375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8523 (or 8513 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 1642123375 is about 40523.1214863811. The cubic root of 1642123375 is about 1179.7824397811.

The spelling of 1642123375 in words is "one billion, six hundred forty-two million, one hundred twenty-three thousand, three hundred seventy-five".