1642260023 has 4 divisors (see below), whose sum is σ = 1651434840. Its totient is φ = 1633085208.

The previous prime is 1642260017. The next prime is 1642260029. The reversal of 1642260023 is 3200622461.

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

It is an interprime number because it is at equal distance from previous prime (1642260017) and next prime (1642260029).

It is a cyclic number.

It is not a de Polignac number, because 1642260023 - 2⁸ = 1642259767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642259974 and 1642260001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642260029) 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 3 ways as a sum of consecutive naturals, for example, 4587140 + ... + 4587497.

It is an arithmetic number, because the mean of its divisors is an integer number (412858710).

Almost surely, 2^1642260023 is an apocalyptic number.

1642260023 is a deficient number, since it is larger than the sum of its proper divisors (9174817).

1642260023 is an equidigital number, since it uses as much as digits as its factorization.

1642260023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9174816.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1642260023 is about 40524.8075010851. The cubic root of 1642260023 is about 1179.8151637614.

Adding to 1642260023 its reverse (3200622461), we get a palindrome (4842882484).

The spelling of 1642260023 in words is "one billion, six hundred forty-two million, two hundred sixty thousand, twenty-three".