1212408 has 40 divisors (see below), whose sum is σ = 3397680. Its totient is φ = 403920.

The previous prime is 1212401. The next prime is 1212427. The reversal of 1212408 is 8042121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212401) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 288 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (84942).

2^1212408 is an apocalyptic number.

1212408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1212408 is an abundant number, since it is smaller than the sum of its proper divisors (2185272).

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

1212408 is a wasteful number, since it uses less digits than its factorization.

1212408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889 (or 1876 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1212408 is about 1101.0940014368. The cubic root of 1212408 is about 106.6308647208.

Adding to 1212408 its reverse (8042121), we get a palindrome (9254529).

The spelling of 1212408 in words is "one million, two hundred twelve thousand, four hundred eight".