420202004 has 12 divisors (see below), whose sum is σ = 740644800. Its totient is φ = 208589208.

The previous prime is 420202001. The next prime is 420202021. The reversal of 420202004 is 400202024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420202001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377324 + ... + 378435.

It is an arithmetic number, because the mean of its divisors is an integer number (61720400).

Almost surely, 2^420202004 is an apocalyptic number.

It is an amenable number.

420202004 is a deficient number, since it is larger than the sum of its proper divisors (320442796).

420202004 is a wasteful number, since it uses less digits than its factorization.

420202004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755902 (or 755900 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 420202004 is about 20498.8293324277. The cubic root of 420202004 is about 749.0072815562.

Adding to 420202004 its reverse (400202024), we get a palindrome (820404028).

The spelling of 420202004 in words is "four hundred twenty million, two hundred two thousand, four".