1802642 has 8 divisors (see below), whose sum is σ = 2729100. Its totient is φ = 892944.

The previous prime is 1802641. The next prime is 1802651. The reversal of 1802642 is 2462081.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 212521 = 1261^2 + 461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1802641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917 + ... + 4352.

2^1802642 is an apocalyptic number.

1802642 is a deficient number, since it is larger than the sum of its proper divisors (926458).

1802642 is a wasteful number, since it uses less digits than its factorization.

1802642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1802642 is about 1342.6250407318. The cubic root of 1802642 is about 121.7035262896.

The spelling of 1802642 in words is "one million, eight hundred two thousand, six hundred forty-two".