1642008023 has 4 divisors (see below), whose sum is σ = 1642450920. Its totient is φ = 1641565128.

The previous prime is 1642008001. The next prime is 1642008029. The reversal of 1642008023 is 3208002461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1642008023 - 2¹² = 1642003927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642007983 and 1642008001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642008029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215840 + ... + 223317.

It is an arithmetic number, because the mean of its divisors is an integer number (410612730).

Almost surely, 2^1642008023 is an apocalyptic number.

1642008023 is a deficient number, since it is larger than the sum of its proper divisors (442897).

1642008023 is an equidigital number, since it uses as much as digits as its factorization.

1642008023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442896.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1642008023 is about 40521.6981751752. The cubic root of 1642008023 is about 1179.7548142785.

The spelling of 1642008023 in words is "one billion, six hundred forty-two million, eight thousand, twenty-three".