1442645002 has 4 divisors (see below), whose sum is σ = 2163967506. Its totient is φ = 721322500.

The previous prime is 1442644981. The next prime is 1442645003. The reversal of 1442645002 is 2005462441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2005462441 = 42961 ⋅46681.

It can be written as a sum of positive squares in only one way, i.e., 1068570721 + 374074281 = 32689^2 + 19341^2 .

It is not an unprimeable number, because it can be changed into a prime (1442645003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360661249 + ... + 360661252.

Almost surely, 2^1442645002 is an apocalyptic number.

1442645002 is a deficient number, since it is larger than the sum of its proper divisors (721322504).

1442645002 is an equidigital number, since it uses as much as digits as its factorization.

1442645002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721322503.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1442645002 is about 37982.1668944783. The cubic root of 1442645002 is about 1129.9342123707.

The spelling of 1442645002 in words is "one billion, four hundred forty-two million, six hundred forty-five thousand, two".