2490043 has 4 divisors (see below), whose sum is σ = 2494800. Its totient is φ = 2485288.

The previous prime is 2490029. The next prime is 2490079. The reversal of 2490043 is 3400942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3400942 = 2 ⋅1700471.

It is a cyclic number.

It is not a de Polignac number, because 2490043 - 2¹³ = 2481851 is a prime.

It is a Duffinian number.

2490043 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2489996 and 2490023.

It is not an unprimeable number, because it can be changed into a prime (2490023) 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, 1480 + ... + 2677.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

2^2490043 is an apocalyptic number.

2490043 is a deficient number, since it is larger than the sum of its proper divisors (4757).

2490043 is an equidigital number, since it uses as much as digits as its factorization.

2490043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2490043 is about 1577.9870088185. The cubic root of 2490043 is about 135.5404580466.

Adding to 2490043 its reverse (3400942), we get a palindrome (5890985).

The spelling of 2490043 in words is "two million, four hundred ninety thousand, forty-three".