5642942 has 4 divisors (see below), whose sum is σ = 8464416. Its totient is φ = 2821470.

The previous prime is 5642911. The next prime is 5642947. The reversal of 5642942 is 2492465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2492465 = 5 ⋅498493.

It is a junction number, because it is equal to n+sod(n) for n = 5642899 and 5642908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410734 + ... + 1410737.

It is an arithmetic number, because the mean of its divisors is an integer number (2116104).

Almost surely, 2^5642942 is an apocalyptic number.

5642942 is a deficient number, since it is larger than the sum of its proper divisors (2821474).

5642942 is a wasteful number, since it uses less digits than its factorization.

5642942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821473.

The product of its digits is 17280, while the sum is 32.

The square root of 5642942 is about 2375.4877393916. The cubic root of 5642942 is about 178.0335542518.

The spelling of 5642942 in words is "five million, six hundred forty-two thousand, nine hundred forty-two".