2042456 has 32 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 917760.

The previous prime is 2042449. The next prime is 2042459. The reversal of 2042456 is 6542402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025 + ... + 4503.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2^2042456 is an apocalyptic number.

2042456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2042456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116800).

2042456 is an abundant number, since it is smaller than the sum of its proper divisors (2191144).

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

2042456 is a wasteful number, since it uses less digits than its factorization.

2042456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2042456 is about 1429.1451990613. The cubic root of 2042456 is about 126.8773900882.

Adding to 2042456 its reverse (6542402), we get a palindrome (8584858).

The spelling of 2042456 in words is "two million, forty-two thousand, four hundred fifty-six".