1200549078 has 96 divisors (see below), whose sum is σ = 2941526016. Its totient is φ = 351800064.

The previous prime is 1200549073. The next prime is 1200549089. The reversal of 1200549078 is 8709450021.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200549071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300651 + ... + 304617.

It is an arithmetic number, because the mean of its divisors is an integer number (30640896).

Almost surely, 2^1200549078 is an apocalyptic number.

1200549078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200549078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1470763008).

1200549078 is an abundant number, since it is smaller than the sum of its proper divisors (1740976938).

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

1200549078 is a wasteful number, since it uses less digits than its factorization.

1200549078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058 (or 4055 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1200549078 is about 34648.9405032823. The cubic root of 1200549078 is about 1062.8206229245.

Adding to 1200549078 its reverse (8709450021), we get a palindrome (9909999099).

The spelling of 1200549078 in words is "one billion, two hundred million, five hundred forty-nine thousand, seventy-eight".