2543400422 has 4 divisors (see below), whose sum is σ = 3815100636. Its totient is φ = 1271700210.

The previous prime is 2543400397. The next prime is 2543400469. The reversal of 2543400422 is 2240043452.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2543400391 and 2543400400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635850104 + ... + 635850107.

It is an arithmetic number, because the mean of its divisors is an integer number (953775159).

Almost surely, 2^2543400422 is an apocalyptic number.

2543400422 is a deficient number, since it is larger than the sum of its proper divisors (1271700214).

2543400422 is a wasteful number, since it uses less digits than its factorization.

2543400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271700213.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2543400422 is about 50432.1367978792. The cubic root of 2543400422 is about 1365.0175852324.

Adding to 2543400422 its reverse (2240043452), we get a palindrome (4783443874).

The spelling of 2543400422 in words is "two billion, five hundred forty-three million, four hundred thousand, four hundred twenty-two".