1201124340 has 144 divisors (see below), whose sum is σ = 4030008528. Its totient is φ = 287649792.

The previous prime is 1201124329. The next prime is 1201124359. The reversal of 1201124340 is 434211021.

1201124340 is a `hidden beast` number, since 1 + 201 + 124 + 340 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3825936 + 1197298404 = 1956^2 + 34602^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79644 + ... + 93516.

Almost surely, 2^1201124340 is an apocalyptic number.

1201124340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201124340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2015004264).

1201124340 is an abundant number, since it is smaller than the sum of its proper divisors (2828884188).

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

1201124340 is a wasteful number, since it uses less digits than its factorization.

1201124340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938 (or 13933 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1201124340 is about 34657.2408018873. The cubic root of 1201124340 is about 1062.9903515651.

Adding to 1201124340 its reverse (434211021), we get a palindrome (1635335361).

The spelling of 1201124340 in words is "one billion, two hundred one million, one hundred twenty-four thousand, three hundred forty".