3540242 has 8 divisors (see below), whose sum is σ = 5370300. Its totient is φ = 1750144.

The previous prime is 3540223. The next prime is 3540247. The reversal of 3540242 is 2420453.

It can be written as a sum of positive squares in 2 ways, for example, as 3500641 + 39601 = 1871^2 + 199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3540247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9767 + ... + 10122.

Almost surely, 2^3540242 is an apocalyptic number.

3540242 is a deficient number, since it is larger than the sum of its proper divisors (1830058).

3540242 is a wasteful number, since it uses less digits than its factorization.

3540242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19980.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3540242 is about 1881.5530818980. The cubic root of 3540242 is about 152.4091297750.

Adding to 3540242 its reverse (2420453), we get a palindrome (5960695).

The spelling of 3540242 in words is "three million, five hundred forty thousand, two hundred forty-two".