5142440 has 32 divisors (see below), whose sum is σ = 11772000. Its totient is φ = 2021184.

The previous prime is 5142421. The next prime is 5142461. The reversal of 5142440 is 442415.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1271 + ... + 3449.

It is an arithmetic number, because the mean of its divisors is an integer number (367875).

Almost surely, 2^5142440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5142440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5886000).

5142440 is an abundant number, since it is smaller than the sum of its proper divisors (6629560).

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

5142440 is a wasteful number, since it uses less digits than its factorization.

5142440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 5142440 is about 2267.6948648352. The cubic root of 5142440 is about 172.6062077866.

Adding to 5142440 its reverse (442415), we get a palindrome (5584855).

The spelling of 5142440 in words is "five million, one hundred forty-two thousand, four hundred forty".