143305402249 has 27 divisors (see below), whose sum is σ = 152201870919. Its totient is φ = 134917714800.

The previous prime is 143305402211. The next prime is 143305402301. The reversal of 143305402249 is 942204503341.

The square root of 143305402249 is 378557.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 99883177849 + 43422224400 = 316043^2 + 208380^2 .

It is not a de Polignac number, because 143305402249 - 2²⁹ = 142768531337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143305409249) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 949042324 + ... + 949042474.

Almost surely, 2^143305402249 is an apocalyptic number.

143305402249 is the 378557-th square number.

143305402249 is the 189279-th centered octagonal number.

It is an amenable number.

143305402249 is a deficient number, since it is larger than the sum of its proper divisors (8896468670).

143305402249 is an frugal number, since it uses more digits than its factorization.

143305402249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 143305402249 in words is "one hundred forty-three billion, three hundred five million, four hundred two thousand, two hundred forty-nine".