1201224540 has 48 divisors (see below), whose sum is σ = 3364945920. Its totient is φ = 320182080.

The previous prime is 1201224533. The next prime is 1201224551. The reversal of 1201224540 is 454221021.

It is a congruent number.

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, 232101 + ... + 237219.

It is an arithmetic number, because the mean of its divisors is an integer number (70103040).

Almost surely, 2^1201224540 is an apocalyptic number.

1201224540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201224540 is an abundant number, since it is smaller than the sum of its proper divisors (2163721380).

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

1201224540 is a wasteful number, since it uses less digits than its factorization.

1201224540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042 (or 9040 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1201224540 is about 34658.6863571025. The cubic root of 1201224540 is about 1063.0199096128.

Adding to 1201224540 its reverse (454221021), we get a palindrome (1655445561).

The spelling of 1201224540 in words is "one billion, two hundred one million, two hundred twenty-four thousand, five hundred forty".