1201050040 has 128 divisors (see below), whose sum is σ = 2927808000. Its totient is φ = 442050048.

The previous prime is 1201050031. The next prime is 1201050061. The reversal of 1201050040 is 400501021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201050040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5244646 + ... + 5244874.

It is an arithmetic number, because the mean of its divisors is an integer number (22873500).

Almost surely, 2^1201050040 is an apocalyptic number.

1201050040 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 1201050040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463904000).

1201050040 is an abundant number, since it is smaller than the sum of its proper divisors (1726757960).

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

1201050040 is a wasteful number, since it uses less digits than its factorization.

1201050040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1201050040 is about 34656.1688592377. The cubic root of 1201050040 is about 1062.9684327099.

Adding to 1201050040 its reverse (400501021), we get a palindrome (1601551061).

The spelling of 1201050040 in words is "one billion, two hundred one million, fifty thousand, forty".