143321274 has 12 divisors (see below), whose sum is σ = 310529466. Its totient is φ = 47773752.

The previous prime is 143321273. The next prime is 143321293. The reversal of 143321274 is 472123341.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 104346225 + 38975049 = 10215^2 + 6243^2 .

It is not an unprimeable number, because it can be changed into a prime (143321273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3981129 + ... + 3981164.

Almost surely, 2^143321274 is an apocalyptic number.

143321274 is an abundant number, since it is smaller than the sum of its proper divisors (167208192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143321274 is a wasteful number, since it uses less digits than its factorization.

143321274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962301 (or 7962298 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 143321274 is about 11971.6863473781. The cubic root of 143321274 is about 523.3234791533.

The spelling of 143321274 in words is "one hundred forty-three million, three hundred twenty-one thousand, two hundred seventy-four".