742651 has 8 divisors (see below), whose sum is σ = 914144. Its totient is φ = 587520.

The previous prime is 742619. The next prime is 742657. The reversal of 742651 is 156247.

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

It is a cyclic number.

It is not a de Polignac number, because 742651 - 2⁵ = 742619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3990 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (114268).

2⁷⁴²⁶⁵¹ is an apocalyptic number.

742651 is a deficient number, since it is larger than the sum of its proper divisors (171493).

742651 is a wasteful number, since it uses less digits than its factorization.

742651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8181.

The product of its digits is 1680, while the sum is 25.

The square root of 742651 is about 861.7720116133. The cubic root of 742651 is about 90.5582990764.

Adding to 742651 its reverse (156247), we get a palindrome (898898).

The spelling of 742651 in words is "seven hundred forty-two thousand, six hundred fifty-one".