1201642 has 16 divisors (see below), whose sum is σ = 1963080. Its totient is φ = 548352.

The previous prime is 1201637. The next prime is 1201643. The reversal of 1201642 is 2461021.

It can be written as a sum of positive squares in 4 ways, for example, as 737881 + 463761 = 859^2 + 681^2 .

It is not an unprimeable number, because it can be changed into a prime (1201643) 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, 2734 + ... + 3142.

2^1201642 is an apocalyptic number.

1201642 is a deficient number, since it is larger than the sum of its proper divisors (761438).

1201642 is a wasteful number, since it uses less digits than its factorization.

1201642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1201642 is about 1096.1943258383. The cubic root of 1201642 is about 106.3143038659.

Adding to 1201642 its reverse (2461021), we get a palindrome (3662663).

The spelling of 1201642 in words is "one million, two hundred one thousand, six hundred forty-two".