1211478 has 16 divisors (see below), whose sum is σ = 2550720. Its totient is φ = 382536.

The previous prime is 1211477. The next prime is 1211489. The reversal of 1211478 is 8741121.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211477) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5200 + ... + 5427.

It is an arithmetic number, because the mean of its divisors is an integer number (159420).

2^1211478 is an apocalyptic number.

1211478 is an abundant number, since it is smaller than the sum of its proper divisors (1339242).

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

1211478 is a wasteful number, since it uses less digits than its factorization.

1211478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651.

The product of its digits is 448, while the sum is 24.

The square root of 1211478 is about 1100.6716131526. The cubic root of 1211478 is about 106.6035933537.

Adding to 1211478 its reverse (8741121), we get a palindrome (9952599).

The spelling of 1211478 in words is "one million, two hundred eleven thousand, four hundred seventy-eight".