1200078 has 72 divisors (see below), whose sum is σ = 3112200. Its totient is φ = 332640.

The previous prime is 1200077. The next prime is 1200083. The reversal of 1200078 is 8700021.

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

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1200078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200077) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41368 + ... + 41396.

It is an arithmetic number, because the mean of its divisors is an integer number (43225).

2^1200078 is an apocalyptic number.

1200078 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 1200078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556100).

1200078 is an abundant number, since it is smaller than the sum of its proper divisors (1912122).

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

1200078 is a wasteful number, since it uses less digits than its factorization.

1200078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 1200078 is about 1095.4807163981. The cubic root of 1200078 is about 106.2681592953.

Adding to 1200078 its reverse (8700021), we get a palindrome (9900099).

The spelling of 1200078 in words is "one million, two hundred thousand, seventy-eight".