742147 has 8 divisors (see below), whose sum is σ = 857696. Its totient is φ = 628992.

The previous prime is 742127. The next prime is 742151. The reversal of 742147 is 741247.

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

It is not a de Polignac number, because 742147 - 2¹¹ = 740099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (107212).

2⁷⁴²¹⁴⁷ is an apocalyptic number.

742147 is a deficient number, since it is larger than the sum of its proper divisors (115549).

742147 is a wasteful number, since it uses less digits than its factorization.

742147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its digits is 1568, while the sum is 25.

The square root of 742147 is about 861.4795412545. The cubic root of 742147 is about 90.5378086480.

Subtracting from 742147 its reverse (741247), we obtain a square (900 = 30²).

The spelling of 742147 in words is "seven hundred forty-two thousand, one hundred forty-seven", and thus it is an iban number.