1902201 has 16 divisors (see below), whose sum is σ = 2918400. Its totient is φ = 1079568.

The previous prime is 1902193. The next prime is 1902203. The reversal of 1902201 is 1022091.

It is a happy number.

It is not a de Polignac number, because 1902201 - 2³ = 1902193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1902203) 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 15 ways as a sum of consecutive naturals, for example, 4830 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (182400).

2^1902201 is an apocalyptic number.

It is an amenable number.

1902201 is a deficient number, since it is larger than the sum of its proper divisors (1016199).

1902201 is a wasteful number, since it uses less digits than its factorization.

1902201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1902201 is about 1379.2030307391. The cubic root of 1902201 is about 123.9040403966.

Adding to 1902201 its reverse (1022091), we get a palindrome (2924292).

The spelling of 1902201 in words is "one million, nine hundred two thousand, two hundred one".