742172197 has 16 divisors (see below), whose sum is σ = 817931520. Its totient is φ = 669195072.

The previous prime is 742172149. The next prime is 742172237. The reversal of 742172197 is 791271247.

It is a de Polignac number, because none of the positive numbers 2^k-742172197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742172107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162418 + ... + 166924.

It is an arithmetic number, because the mean of its divisors is an integer number (51120720).

Almost surely, 2^742172197 is an apocalyptic number.

It is an amenable number.

742172197 is a deficient number, since it is larger than the sum of its proper divisors (75759323).

742172197 is a wasteful number, since it uses less digits than its factorization.

742172197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812.

The product of its digits is 49392, while the sum is 40.

The square root of 742172197 is about 27242.8375357634. The cubic root of 742172197 is about 905.3883326774.

The spelling of 742172197 in words is "seven hundred forty-two million, one hundred seventy-two thousand, one hundred ninety-seven".