143457897 has 16 divisors (see below), whose sum is σ = 208866240. Its totient is φ = 86860800.

The previous prime is 143457857. The next prime is 143457911. The reversal of 143457897 is 798754341.

It is a happy number.

It is not a de Polignac number, because 143457897 - 2⁶ = 143457833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143457817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67629 + ... + 69717.

It is an arithmetic number, because the mean of its divisors is an integer number (13054140).

Almost surely, 2^143457897 is an apocalyptic number.

It is an amenable number.

143457897 is a deficient number, since it is larger than the sum of its proper divisors (65408343).

143457897 is a wasteful number, since it uses less digits than its factorization.

143457897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184.

The product of its digits is 846720, while the sum is 48.

The square root of 143457897 is about 11977.3910765241. The cubic root of 143457897 is about 523.4897148067.

The spelling of 143457897 in words is "one hundred forty-three million, four hundred fifty-seven thousand, eight hundred ninety-seven".