1212955 has 4 divisors (see below), whose sum is σ = 1455552. Its totient is φ = 970360.

The previous prime is 1212943. The next prime is 1212973. The reversal of 1212955 is 5592121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5592121 = 31 ⋅180391.

It is not a de Polignac number, because 1212955 - 2⁵ = 1212923 is a prime.

It is a Duffinian number.

1212955 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121291 + ... + 121300.

It is an arithmetic number, because the mean of its divisors is an integer number (363888).

2^1212955 is an apocalyptic number.

1212955 is a deficient number, since it is larger than the sum of its proper divisors (242597).

1212955 is an equidigital number, since it uses as much as digits as its factorization.

1212955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242596.

The product of its digits is 900, while the sum is 25.

The square root of 1212955 is about 1101.3423627556. The cubic root of 1212955 is about 106.6468984634.

The spelling of 1212955 in words is "one million, two hundred twelve thousand, nine hundred fifty-five".