6403042 has 4 divisors (see below), whose sum is σ = 9604566. Its totient is φ = 3201520.

The previous prime is 6403031. The next prime is 6403051. The reversal of 6403042 is 2403046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2403046 = 2 ⋅1201523.

It can be written as a sum of positive squares in only one way, i.e., 6007401 + 395641 = 2451^2 + 629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600759 + ... + 1600762.

Almost surely, 2^6403042 is an apocalyptic number.

6403042 is a deficient number, since it is larger than the sum of its proper divisors (3201524).

6403042 is a wasteful number, since it uses less digits than its factorization.

6403042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201523.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 6403042 is about 2530.4232847490. The cubic root of 6403042 is about 185.6929647544.

Adding to 6403042 its reverse (2403046), we get a palindrome (8806088).

The spelling of 6403042 in words is "six million, four hundred three thousand, forty-two".