742172237 has 2 divisors, whose sum is σ = 742172238. Its totient is φ = 742172236.

The previous prime is 742172149. The next prime is 742172251. The reversal of 742172237 is 732271247.

742172237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434555716 + 307616521 = 20846^2 + 17539^2 .

It is an emirp because it is prime and its reverse (732271247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742172237 - 2²⁰ = 741123661 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 742172197 and 742172206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742172297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371086118 + 371086119.

It is an arithmetic number, because the mean of its divisors is an integer number (371086119).

Almost surely, 2^742172237 is an apocalyptic number.

It is an amenable number.

742172237 is a deficient number, since it is larger than the sum of its proper divisors (1).

742172237 is an equidigital number, since it uses as much as digits as its factorization.

742172237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32928, while the sum is 35.

The square root of 742172237 is about 27242.8382699013. The cubic root of 742172237 is about 905.3883489429.

The spelling of 742172237 in words is "seven hundred forty-two million, one hundred seventy-two thousand, two hundred thirty-seven".