197542027 has 4 divisors (see below), whose sum is σ = 198108400. Its totient is φ = 196975656.

The previous prime is 197542021. The next prime is 197542067. The reversal of 197542027 is 720245791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720245791 = 443 ⋅1625837.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197542027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197542021) 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, 282663 + ... + 283360.

It is an arithmetic number, because the mean of its divisors is an integer number (49527100).

Almost surely, 2^197542027 is an apocalyptic number.

197542027 is a deficient number, since it is larger than the sum of its proper divisors (566373).

197542027 is an equidigital number, since it uses as much as digits as its factorization.

197542027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566372.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 197542027 is about 14054.9644965756. The cubic root of 197542027 is about 582.3979468412.

The spelling of 197542027 in words is "one hundred ninety-seven million, five hundred forty-two thousand, twenty-seven".