1201140420 has 48 divisors (see below), whose sum is σ = 3376634688. Its totient is φ = 319024000.

The previous prime is 1201140403. The next prime is 1201140443. The reversal of 1201140420 is 240411021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201140420.

It is an unprimeable number.

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, 24819 + ... + 54938.

It is an arithmetic number, because the mean of its divisors is an integer number (70346556).

Almost surely, 2^1201140420 is an apocalyptic number.

1201140420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201140420 is an abundant number, since it is smaller than the sum of its proper divisors (2175494268).

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

1201140420 is a wasteful number, since it uses less digits than its factorization.

1201140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80020 (or 80018 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1201140420 is about 34657.4727872648. The cubic root of 1201140420 is about 1062.9950951230.

Adding to 1201140420 its reverse (240411021), we get a palindrome (1441551441).

The spelling of 1201140420 in words is "one billion, two hundred one million, one hundred forty thousand, four hundred twenty".