1202225420 has 24 divisors (see below), whose sum is σ = 2754189648. Its totient is φ = 437172800.

The previous prime is 1202225417. The next prime is 1202225429. The reversal of 1202225420 is 245222021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1202225392 and 1202225401.

It is not an unprimeable number, because it can be changed into a prime (1202225429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732111 + ... + 2732550.

It is an arithmetic number, because the mean of its divisors is an integer number (114757902).

Almost surely, 2^1202225420 is an apocalyptic number.

1202225420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202225420 is an abundant number, since it is smaller than the sum of its proper divisors (1551964228).

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

1202225420 is a wasteful number, since it uses less digits than its factorization.

1202225420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464681 (or 5464679 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1202225420 is about 34673.1224437604. The cubic root of 1202225420 is about 1063.3150695286.

Adding to 1202225420 its reverse (245222021), we get a palindrome (1447447441).

It can be divided in two parts, 1202 and 225420, that added together give a palindrome (226622).

The spelling of 1202225420 in words is "one billion, two hundred two million, two hundred twenty-five thousand, four hundred twenty".