1201162400 has 72 divisors (see below), whose sum is σ = 2937679164. Its totient is φ = 479590400.

The previous prime is 1201162393. The next prime is 1201162411. The reversal of 1201162400 is 42611021.

It can be written as a sum of positive squares in 6 ways, for example, as 18627856 + 1182534544 = 4316^2 + 34388^2 .

It is a super-2 number, since 2×1201162400² = 2885582222347520000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607814 + ... + 609786.

Almost surely, 2^1201162400 is an apocalyptic number.

1201162400 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 1201162400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468839582).

1201162400 is an abundant number, since it is smaller than the sum of its proper divisors (1736516764).

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

1201162400 is a wasteful number, since it uses less digits than its factorization.

1201162400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1201162400 is about 34657.7898891432. The cubic root of 1201162400 is about 1063.0015790970.

Adding to 1201162400 its reverse (42611021), we get a palindrome (1243773421).

The spelling of 1201162400 in words is "one billion, two hundred one million, one hundred sixty-two thousand, four hundred".