1642442 has 16 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 779520.

The previous prime is 1642441. The next prime is 1642447. The reversal of 1642442 is 2442461.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1642441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434 + ... + 3882.

It is an arithmetic number, because the mean of its divisors is an integer number (162000).

2^1642442 is an apocalyptic number.

1642442 is a deficient number, since it is larger than the sum of its proper divisors (949558).

1642442 is a wasteful number, since it uses less digits than its factorization.

1642442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 1536, while the sum is 23.

The square root of 1642442 is about 1281.5779336427. The cubic root of 1642442 is about 117.9858740152.

The spelling of 1642442 in words is "one million, six hundred forty-two thousand, four hundred forty-two".