142773897 has 12 divisors (see below), whose sum is σ = 221445456. Its totient is φ = 81585000.

The previous prime is 142773863. The next prime is 142773899. The reversal of 142773897 is 798377241.

It is not a de Polignac number, because 142773897 - 2¹⁰ = 142772873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142773899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485479 + ... + 485772.

It is an arithmetic number, because the mean of its divisors is an integer number (18453788).

Almost surely, 2^142773897 is an apocalyptic number.

It is an amenable number.

142773897 is a deficient number, since it is larger than the sum of its proper divisors (78671559).

142773897 is an equidigital number, since it uses as much as digits as its factorization.

142773897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971268 (or 971261 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 142773897 is about 11948.8031618234. The cubic root of 142773897 is about 522.6563981649.

The spelling of 142773897 in words is "one hundred forty-two million, seven hundred seventy-three thousand, eight hundred ninety-seven".