1212393 has 16 divisors (see below), whose sum is σ = 1990016. Its totient is φ = 639360.

The previous prime is 1212373. The next prime is 1212397. The reversal of 1212393 is 3932121.

It is a happy number.

It is not a de Polignac number, because 1212393 - 2⁵ = 1212361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1212397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1948 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (124376).

2^1212393 is an apocalyptic number.

1212393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212393 is a deficient number, since it is larger than the sum of its proper divisors (777623).

1212393 is a wasteful number, since it uses less digits than its factorization.

1212393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464.

The product of its digits is 324, while the sum is 21.

The square root of 1212393 is about 1101.0871900081. The cubic root of 1212393 is about 106.6304249707.

The spelling of 1212393 in words is "one million, two hundred twelve thousand, three hundred ninety-three".