197172542 has 8 divisors (see below), whose sum is σ = 338010096. Its totient is φ = 84502512.

The previous prime is 197172539. The next prime is 197172571. The reversal of 197172542 is 245271791.

It is a happy number.

197172542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×197172542² = 77754022637483528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197172496 and 197172505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7041863 + ... + 7041890.

It is an arithmetic number, because the mean of its divisors is an integer number (42251262).

Almost surely, 2^197172542 is an apocalyptic number.

197172542 is a deficient number, since it is larger than the sum of its proper divisors (140837554).

197172542 is a wasteful number, since it uses less digits than its factorization.

197172542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14083762.

The product of its digits is 35280, while the sum is 38.

The square root of 197172542 is about 14041.8140565954. The cubic root of 197172542 is about 582.0346121604.

The spelling of 197172542 in words is "one hundred ninety-seven million, one hundred seventy-two thousand, five hundred forty-two".