742215 has 8 divisors (see below), whose sum is σ = 1187568. Its totient is φ = 395840.

The previous prime is 742213. The next prime is 742219. The reversal of 742215 is 512247.

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

It is not a de Polignac number, because 742215 - 2¹ = 742213 is a prime.

742215 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 742191 and 742200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24726 + ... + 24755.

It is an arithmetic number, because the mean of its divisors is an integer number (148446).

2⁷⁴²²¹⁵ is an apocalyptic number.

742215 is a deficient number, since it is larger than the sum of its proper divisors (445353).

742215 is a wasteful number, since it uses less digits than its factorization.

742215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49489.

The product of its digits is 560, while the sum is 21.

The square root of 742215 is about 861.5190073353. The cubic root of 742215 is about 90.5405737709.

The spelling of 742215 in words is "seven hundred forty-two thousand, two hundred fifteen".