1841402 has 4 divisors (see below), whose sum is σ = 2762106. Its totient is φ = 920700.

The previous prime is 1841401. The next prime is 1841429. The reversal of 1841402 is 2041481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041481 = 13 ⋅157037.

It can be written as a sum of positive squares in only one way, i.e., 1515361 + 326041 = 1231^2 + 571^2 .

It is a super-2 number, since 2×1841402² = 6781522651208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1841401) 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 as a sum of consecutive naturals, namely, 460349 + ... + 460352.

2^1841402 is an apocalyptic number.

1841402 is a deficient number, since it is larger than the sum of its proper divisors (920704).

1841402 is an equidigital number, since it uses as much as digits as its factorization.

1841402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920703.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1841402 is about 1356.9826822771. The cubic root of 1841402 is about 122.5696286096.

Adding to 1841402 its reverse (2041481), we get a palindrome (3882883).

The spelling of 1841402 in words is "one million, eight hundred forty-one thousand, four hundred two".