2440154 has 4 divisors (see below), whose sum is σ = 3660234. Its totient is φ = 1220076.

The previous prime is 2440153. The next prime is 2440177. The reversal of 2440154 is 4510442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1885129 + 555025 = 1373^2 + 745^2 .

It is not an unprimeable number, because it can be changed into a prime (2440153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610037 + ... + 610040.

2^2440154 is an apocalyptic number.

2440154 is a deficient number, since it is larger than the sum of its proper divisors (1220080).

2440154 is a wasteful number, since it uses less digits than its factorization.

2440154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220079.

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

The square root of 2440154 is about 1562.0992286023. The cubic root of 2440154 is about 134.6291421879.

Adding to 2440154 its reverse (4510442), we get a palindrome (6950596).

The spelling of 2440154 in words is "two million, four hundred forty thousand, one hundred fifty-four".