1600442 has 4 divisors (see below), whose sum is σ = 2400666. Its totient is φ = 800220.

The previous prime is 1600433. The next prime is 1600451. The reversal of 1600442 is 2440061.

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

It is an interprime number because it is at equal distance from previous prime (1600433) and next prime (1600451).

It can be written as a sum of positive squares in only one way, i.e., 1125721 + 474721 = 1061^2 + 689^2 .

It is a super-2 number, since 2×1600442² = 5122829190728, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 1600442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400109 + ... + 400112.

2^1600442 is an apocalyptic number.

1600442 is a deficient number, since it is larger than the sum of its proper divisors (800224).

1600442 is an equidigital number, since it uses as much as digits as its factorization.

1600442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800223.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1600442 is about 1265.0857678434. The cubic root of 1600442 is about 116.9714786689.

The spelling of 1600442 in words is "one million, six hundred thousand, four hundred forty-two".