1212478 has 8 divisors (see below), whose sum is σ = 1823472. Its totient is φ = 604656.

The previous prime is 1212473. The next prime is 1212479. The reversal of 1212478 is 8742121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826 + ... + 1762.

It is an arithmetic number, because the mean of its divisors is an integer number (227934).

2^1212478 is an apocalyptic number.

1212478 is a deficient number, since it is larger than the sum of its proper divisors (610994).

1212478 is an equidigital number, since it uses as much as digits as its factorization.

1212478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its digits is 896, while the sum is 25.

The square root of 1212478 is about 1101.1257875465. The cubic root of 1212478 is about 106.6329168399.

Adding to 1212478 its reverse (8742121), we get a palindrome (9954599).

The spelling of 1212478 in words is "one million, two hundred twelve thousand, four hundred seventy-eight".