197142078 has 16 divisors (see below), whose sum is σ = 450610560. Its totient is φ = 56326296.

The previous prime is 197142053. The next prime is 197142089. The reversal of 197142078 is 870241791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2346888 + ... + 2346971.

It is an arithmetic number, because the mean of its divisors is an integer number (28163160).

Almost surely, 2^197142078 is an apocalyptic number.

197142078 is an abundant number, since it is smaller than the sum of its proper divisors (253468482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197142078 is a wasteful number, since it uses less digits than its factorization.

197142078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693871.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 197142078 is about 14040.7292545651. The cubic root of 197142078 is about 582.0046350052.

The spelling of 197142078 in words is "one hundred ninety-seven million, one hundred forty-two thousand, seventy-eight".