1594402 has 4 divisors (see below), whose sum is σ = 2391606. Its totient is φ = 797200.

The previous prime is 1594387. The next prime is 1594403. The reversal of 1594402 is 2044951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 531441 = 1031^2 + 729^2 .

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1594403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398599 + ... + 398602.

2^1594402 is an apocalyptic number.

1594402 is a deficient number, since it is larger than the sum of its proper divisors (797204).

1594402 is an equidigital number, since it uses as much as digits as its factorization.

1594402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797203.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1594402 is about 1262.6963213695. The cubic root of 1594402 is about 116.8241447083.

The spelling of 1594402 in words is "one million, five hundred ninety-four thousand, four hundred two".