1201995 has 12 divisors (see below), whose sum is σ = 2083536. Its totient is φ = 641040.

The previous prime is 1201969. The next prime is 1201999. The reversal of 1201995 is 5991021.

It is a happy number.

It is not a de Polignac number, because 1201995 - 2⁹ = 1201483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201999) 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 11 ways as a sum of consecutive naturals, for example, 13311 + ... + 13400.

It is an arithmetic number, because the mean of its divisors is an integer number (173628).

2^1201995 is an apocalyptic number.

1201995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1201995 is a deficient number, since it is larger than the sum of its proper divisors (881541).

1201995 is a wasteful number, since it uses less digits than its factorization.

1201995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26722 (or 26719 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1201995 is about 1096.3553256130. The cubic root of 1201995 is about 106.3247133098.

The spelling of 1201995 in words is "one million, two hundred one thousand, nine hundred ninety-five".