197286642 has 36 divisors (see below), whose sum is σ = 497245086. Its totient is φ = 56367360.

The previous prime is 197286641. The next prime is 197286643. The reversal of 197286642 is 246682791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (197286641) and next prime (197286643).

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 16088121 = 13461^2 + 4011^2 .

It is a super-2 number, since 2×197286642² = 77844038223272328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197286641) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 110959 + ... + 112722.

Almost surely, 2^197286642 is an apocalyptic number.

197286642 is an abundant number, since it is smaller than the sum of its proper divisors (299958444).

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

197286642 is a wasteful number, since it uses less digits than its factorization.

197286642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223703 (or 223693 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 197286642 is about 14045.8763343552. The cubic root of 197286642 is about 582.1468612978.

The spelling of 197286642 in words is "one hundred ninety-seven million, two hundred eighty-six thousand, six hundred forty-two".