8542420 has 24 divisors (see below), whose sum is σ = 17998848. Its totient is φ = 3405600.

The previous prime is 8542411. The next prime is 8542421. The reversal of 8542420 is 242458.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8542421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8125 + ... + 9115.

It is an arithmetic number, because the mean of its divisors is an integer number (749952).

Almost surely, 2^8542420 is an apocalyptic number.

It is an amenable number.

8542420 is an abundant number, since it is smaller than the sum of its proper divisors (9456428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8542420 is a wasteful number, since it uses less digits than its factorization.

8542420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8542420 is about 2922.7418633879. The cubic root of 8542420 is about 204.4216895577.

Adding to 8542420 its reverse (242458), we get a palindrome (8784878).

The spelling of 8542420 in words is "eight million, five hundred forty-two thousand, four hundred twenty".