143801449 has 4 divisors (see below), whose sum is σ = 156874320. Its totient is φ = 130728580.

The previous prime is 143801447. The next prime is 143801501. The reversal of 143801449 is 944108341.

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, and also an emirpimes, since its reverse is a distinct semiprime: 944108341 = 11 ⋅85828031.

It is a cyclic number.

It is not a de Polignac number, because 143801449 - 2¹ = 143801447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143801447) 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, 6536419 + ... + 6536440.

It is an arithmetic number, because the mean of its divisors is an integer number (39218580).

Almost surely, 2^143801449 is an apocalyptic number.

It is an amenable number.

143801449 is a deficient number, since it is larger than the sum of its proper divisors (13072871).

143801449 is a wasteful number, since it uses less digits than its factorization.

143801449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13072870.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 143801449 is about 11991.7241879556. The cubic root of 143801449 is about 523.9072648762.

The spelling of 143801449 in words is "one hundred forty-three million, eight hundred one thousand, four hundred forty-nine".