1201214520 has 96 divisors (see below), whose sum is σ = 4258865520. Its totient is φ = 291202560.

The previous prime is 1201214519. The next prime is 1201214527. The reversal of 1201214520 is 254121021.

1201214520 is a `hidden beast` number, since 1 + 20 + 121 + 4 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1201214493 and 1201214502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201214527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147709 + ... + 155628.

Almost surely, 2^1201214520 is an apocalyptic number.

1201214520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201214520 is an abundant number, since it is smaller than the sum of its proper divisors (3057651000).

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

1201214520 is a wasteful number, since it uses less digits than its factorization.

1201214520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303365 (or 303358 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1201214520 is about 34658.5418042941. The cubic root of 1201214520 is about 1063.0169538820.

Adding to 1201214520 its reverse (254121021), we get a palindrome (1455335541).

The spelling of 1201214520 in words is "one billion, two hundred one million, two hundred fourteen thousand, five hundred twenty".