143474137 has 4 divisors (see below), whose sum is σ = 143606736. Its totient is φ = 143341540.

The previous prime is 143474131. The next prime is 143474143. The reversal of 143474137 is 731474341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (143474131) and next prime (143474143).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143474137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143474131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64663 + ... + 66844.

It is an arithmetic number, because the mean of its divisors is an integer number (35901684).

Almost surely, 2^143474137 is an apocalyptic number.

It is an amenable number.

143474137 is a deficient number, since it is larger than the sum of its proper divisors (132599).

143474137 is a wasteful number, since it uses less digits than its factorization.

143474137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132598.

The product of its digits is 28224, while the sum is 34.

The square root of 143474137 is about 11978.0690013040. The cubic root of 143474137 is about 523.5094677617.

The spelling of 143474137 in words is "one hundred forty-three million, four hundred seventy-four thousand, one hundred thirty-seven".