4020040342 has 4 divisors (see below), whose sum is σ = 6030060516. Its totient is φ = 2010020170.

The previous prime is 4020040327. The next prime is 4020040363. The reversal of 4020040342 is 2430400204.

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

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, 1005010084 + ... + 1005010087.

It is an arithmetic number, because the mean of its divisors is an integer number (1507515129).

Almost surely, 2^4020040342 is an apocalyptic number.

4020040342 is a deficient number, since it is larger than the sum of its proper divisors (2010020174).

4020040342 is a wasteful number, since it uses less digits than its factorization.

4020040342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010020173.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 4020040342 is about 63403.7880729535. The cubic root of 4020040342 is about 1590.0476419937.

Adding to 4020040342 its reverse (2430400204), we get a palindrome (6450440546).

The spelling of 4020040342 in words is "four billion, twenty million, forty thousand, three hundred forty-two".