5142540 has 96 divisors (see below), whose sum is σ = 16369920. Its totient is φ = 1195776.

The previous prime is 5142539. The next prime is 5142587. The reversal of 5142540 is 452415.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14647 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (170520).

Almost surely, 2^5142540 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 5142540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8184960).

5142540 is an abundant number, since it is smaller than the sum of its proper divisors (11227380).

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

5142540 is a wasteful number, since it uses less digits than its factorization.

5142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 5142540 is about 2267.7169135498. The cubic root of 5142540 is about 172.6073266141.

Adding to 5142540 its reverse (452415), we get a palindrome (5594955).

The spelling of 5142540 in words is "five million, one hundred forty-two thousand, five hundred forty".