402202420 has 24 divisors (see below), whose sum is σ = 846707400. Its totient is φ = 160484352.

The previous prime is 402202417. The next prime is 402202429. The reversal of 402202420 is 24202204.

It can be written as a sum of positive squares in 4 ways, for example, as 151486864 + 250715556 = 12308^2 + 15834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402202394 and 402202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402202429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16405 + ... + 32764.

It is an arithmetic number, because the mean of its divisors is an integer number (35279475).

Almost surely, 2^402202420 is an apocalyptic number.

It is an amenable number.

402202420 is an abundant number, since it is smaller than the sum of its proper divisors (444504980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402202420 is a wasteful number, since it uses less digits than its factorization.

402202420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49587 (or 49585 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 402202420 is about 20054.9849164740. The cubic root of 402202420 is about 738.1561227955.

Adding to 402202420 its reverse (24202204), we get a palindrome (426404624).

The spelling of 402202420 in words is "four hundred two million, two hundred two thousand, four hundred twenty".