144405802 has 4 divisors (see below), whose sum is σ = 216608706. Its totient is φ = 72202900.

The previous prime is 144405787. The next prime is 144405827. The reversal of 144405802 is 208504441.

144405802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 208504441 = 12953 ⋅16097.

It can be written as a sum of positive squares in only one way, i.e., 114254721 + 30151081 = 10689^2 + 5491^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101449 + ... + 36101452.

Almost surely, 2^144405802 is an apocalyptic number.

144405802 is a deficient number, since it is larger than the sum of its proper divisors (72202904).

144405802 is an equidigital number, since it uses as much as digits as its factorization.

144405802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72202903.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 144405802 is about 12016.8965211489. The cubic root of 144405802 is about 524.6401791440.

The spelling of 144405802 in words is "one hundred forty-four million, four hundred five thousand, eight hundred two".