1201004420 has 48 divisors (see below), whose sum is σ = 3144451968. Its totient is φ = 374338560.

The previous prime is 1201004419. The next prime is 1201004429. The reversal of 1201004420 is 244001021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1201004395 and 1201004404.

It is not an unprimeable number, because it can be changed into a prime (1201004429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388397 + ... + 391476.

It is an arithmetic number, because the mean of its divisors is an integer number (65509416).

Almost surely, 2^1201004420 is an apocalyptic number.

1201004420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201004420 is an abundant number, since it is smaller than the sum of its proper divisors (1943447548).

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

1201004420 is a wasteful number, since it uses less digits than its factorization.

1201004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779900 (or 779898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1201004420 is about 34655.5106729074. The cubic root of 1201004420 is about 1062.9549741438.

Adding to 1201004420 its reverse (244001021), we get a palindrome (1445005441).

The spelling of 1201004420 in words is "one billion, two hundred one million, four thousand, four hundred twenty".