4540242 has 24 divisors (see below), whose sum is σ = 10563696. Its totient is φ = 1297128.

The previous prime is 4540231. The next prime is 4540303. The reversal of 4540242 is 2420454.

It is a super-2 number, since 2×4540242² = 41227594837128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 7428 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (440154).

Almost surely, 2^4540242 is an apocalyptic number.

4540242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

4540242 is an abundant number, since it is smaller than the sum of its proper divisors (6023454).

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

4540242 is a wasteful number, since it uses less digits than its factorization.

4540242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462 (or 15455 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 4540242 is about 2130.7843626233. The cubic root of 4540242 is about 165.5870366057.

Adding to 4540242 its reverse (2420454), we get a palindrome (6960696).

The spelling of 4540242 in words is "four million, five hundred forty thousand, two hundred forty-two".