4142540 has 12 divisors (see below), whose sum is σ = 8699376. Its totient is φ = 1657008.

The previous prime is 4142521. The next prime is 4142569. The reversal of 4142540 is 452414.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 207127 = 4142540 / (4 + 1 + 4 + 2 + 5 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103544 + ... + 103583.

It is an arithmetic number, because the mean of its divisors is an integer number (724948).

Almost surely, 2^4142540 is an apocalyptic number.

It is an amenable number.

4142540 is an abundant number, since it is smaller than the sum of its proper divisors (4556836).

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

4142540 is a wasteful number, since it uses less digits than its factorization.

4142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207136 (or 207134 counting only the distinct ones).

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

The square root of 4142540 is about 2035.3230701783. The cubic root of 4142540 is about 160.6037088163.

Adding to 4142540 its reverse (452414), we get a palindrome (4594954).

The spelling of 4142540 in words is "four million, one hundred forty-two thousand, five hundred forty".