5742640 has 40 divisors (see below), whose sum is σ = 13936608. Its totient is φ = 2196480.

The previous prime is 5742631. The next prime is 5742641. The reversal of 5742640 is 462475.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 5742599 and 5742608.

It is not an unprimeable number, because it can be changed into a prime (5742641) 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, 280 + ... + 3400.

Almost surely, 2^5742640 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 5742640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6968304).

5742640 is an abundant number, since it is smaller than the sum of its proper divisors (8193968).

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

5742640 is a wasteful number, since it uses less digits than its factorization.

5742640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3151 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 5742640 is about 2396.3806041612. The cubic root of 5742640 is about 179.0759225593.

The spelling of 5742640 in words is "five million, seven hundred forty-two thousand, six hundred forty".