197090742 has 16 divisors (see below), whose sum is σ = 394775280. Its totient is φ = 65597952.

The previous prime is 197090737. The next prime is 197090753. The reversal of 197090742 is 247090791.

It is a super-2 number, since 2×197090742² = 77689521164221128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197090742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20367 + ... + 28442.

It is an arithmetic number, because the mean of its divisors is an integer number (24673455).

Almost surely, 2^197090742 is an apocalyptic number.

197090742 is an abundant number, since it is smaller than the sum of its proper divisors (197684538).

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

197090742 is a wasteful number, since it uses less digits than its factorization.

197090742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49487.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 197090742 is about 14038.9010253652. The cubic root of 197090742 is about 581.9541124176.

The spelling of 197090742 in words is "one hundred ninety-seven million, ninety thousand, seven hundred forty-two".