5242640 has 60 divisors (see below), whose sum is σ = 13314252. Its totient is φ = 1908480.

The previous prime is 5242619. The next prime is 5242661. The reversal of 5242640 is 462425.

It is an interprime number because it is at equal distance from previous prime (5242619) and next prime (5242661).

It can be written as a sum of positive squares in 2 ways, for example, as 1290496 + 3952144 = 1136^2 + 1988^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73805 + ... + 73875.

Almost surely, 2^5242640 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 5242640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6657126).

5242640 is an abundant number, since it is smaller than the sum of its proper divisors (8071612).

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

5242640 is a wasteful number, since it uses less digits than its factorization.

5242640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 5242640 is about 2289.6812005168. The cubic root of 5242640 is about 173.7200766232.

The spelling of 5242640 in words is "five million, two hundred forty-two thousand, six hundred forty".