1201870 has 16 divisors (see below), whose sum is σ = 2233728. Its totient is φ = 465120.

The previous prime is 1201853. The next prime is 1201873. The reversal of 1201870 is 781021.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201873) 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 7 ways as a sum of consecutive naturals, for example, 1629 + ... + 2248.

It is an arithmetic number, because the mean of its divisors is an integer number (139608).

2^1201870 is an apocalyptic number.

1201870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201870 is a deficient number, since it is larger than the sum of its proper divisors (1031858).

1201870 is a wasteful number, since it uses less digits than its factorization.

1201870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1201870 is about 1096.2983170652. The cubic root of 1201870 is about 106.3210274791.

Adding to 1201870 its reverse (781021), we get a palindrome (1982891).

The spelling of 1201870 in words is "one million, two hundred one thousand, eight hundred seventy".