4042400200402 has 4 divisors (see below), whose sum is σ = 6063600300606. Its totient is φ = 2021200100200.

The previous prime is 4042400200369. The next prime is 4042400200409. The reversal of 4042400200402 is 2040020042404.

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

It can be written as a sum of positive squares in only one way, i.e., 3535073072041 + 507327128361 = 1880179^2 + 712269^2 .

It is not an unprimeable number, because it can be changed into a prime (4042400200409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010600050099 + ... + 1010600050102.

Almost surely, 2^{4042400200402} is an apocalyptic number.

4042400200402 is a deficient number, since it is larger than the sum of its proper divisors (2021200100204).

4042400200402 is a wasteful number, since it uses less digits than its factorization.

4042400200402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021200100203.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 4042400200402 its reverse (2040020042404), we get a palindrome (6082420242806).

The spelling of 4042400200402 in words is "four trillion, forty-two billion, four hundred million, two hundred thousand, four hundred two".