143978254939 has 2 divisors, whose sum is σ = 143978254940. Its totient is φ = 143978254938.

The previous prime is 143978254867. The next prime is 143978254943. The reversal of 143978254939 is 939452879341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143978254939 - 2²³ = 143969866331 is a prime.

It is not a weakly prime, because it can be changed into another prime (143978252939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71989127469 + 71989127470.

It is an arithmetic number, because the mean of its divisors is an integer number (71989127470).

Almost surely, 2^143978254939 is an apocalyptic number.

143978254939 is a deficient number, since it is larger than the sum of its proper divisors (1).

143978254939 is an equidigital number, since it uses as much as digits as its factorization.

143978254939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 64.

The spelling of 143978254939 in words is "one hundred forty-three billion, nine hundred seventy-eight million, two hundred fifty-four thousand, nine hundred thirty-nine".