1642023 has 12 divisors (see below), whose sum is σ = 2436408. Its totient is φ = 1064880.

The previous prime is 1642021. The next prime is 1642031. The reversal of 1642023 is 3202461.

It is a happy number.

1642023 is a `hidden beast` number, since 1 + 642 + 0 + 23 = 666.

It is not a de Polignac number, because 1642023 - 2¹ = 1642021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1641987 and 1642005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2133 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (203034).

2^1642023 is an apocalyptic number.

1642023 is a deficient number, since it is larger than the sum of its proper divisors (794385).

1642023 is a wasteful number, since it uses less digits than its factorization.

1642023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1642023 is about 1281.4144528606. The cubic root of 1642023 is about 117.9758401174.

Adding to 1642023 its reverse (3202461), we get a palindrome (4844484).

It can be divided in two parts, 164 and 2023, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1642023 in words is "one million, six hundred forty-two thousand, twenty-three".