142571097 has 20 divisors (see below), whose sum is σ = 214424100. Its totient is φ = 94401504.

The previous prime is 142571087. The next prime is 142571111. The reversal of 142571097 is 790175241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34327881 + 108243216 = 5859^2 + 10404^2 .

It is not a de Polignac number, because 142571097 - 2¹⁵ = 142538329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142571017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6163 + ... + 17975.

It is an arithmetic number, because the mean of its divisors is an integer number (10721205).

Almost surely, 2^142571097 is an apocalyptic number.

It is an amenable number.

142571097 is a deficient number, since it is larger than the sum of its proper divisors (71853003).

142571097 is a wasteful number, since it uses less digits than its factorization.

142571097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11974 (or 11965 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 142571097 is about 11940.3139405964. The cubic root of 142571097 is about 522.4088156928.

The spelling of 142571097 in words is "one hundred forty-two million, five hundred seventy-one thousand, ninety-seven".