142793897 has 4 divisors (see below), whose sum is σ = 151193556. Its totient is φ = 134394240.

The previous prime is 142793891. The next prime is 142793899. The reversal of 142793897 is 798397241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45751696 + 97042201 = 6764^2 + 9851^2 .

It is a cyclic number.

It is not a de Polignac number, because 142793897 - 2⁸ = 142793641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142793891) 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, 4199804 + ... + 4199837.

It is an arithmetic number, because the mean of its divisors is an integer number (37798389).

Almost surely, 2^142793897 is an apocalyptic number.

142793897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142793897 is a deficient number, since it is larger than the sum of its proper divisors (8399659).

142793897 is an equidigital number, since it uses as much as digits as its factorization.

142793897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399658.

The product of its digits is 762048, while the sum is 50.

The square root of 142793897 is about 11949.6400364195. The cubic root of 142793897 is about 522.6808018786.

The spelling of 142793897 in words is "one hundred forty-two million, seven hundred ninety-three thousand, eight hundred ninety-seven".