742245 has 16 divisors (see below), whose sum is σ = 1357440. Its totient is φ = 339264.

The previous prime is 742243. The next prime is 742253. The reversal of 742245 is 542247.

It is not a de Polignac number, because 742245 - 2¹ = 742243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742241) 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 15 ways as a sum of consecutive naturals, for example, 3430 + ... + 3639.

It is an arithmetic number, because the mean of its divisors is an integer number (84840).

2⁷⁴²²⁴⁵ is an apocalyptic number.

It is an amenable number.

742245 is a deficient number, since it is larger than the sum of its proper divisors (615195).

742245 is a wasteful number, since it uses less digits than its factorization.

742245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7084.

The product of its digits is 2240, while the sum is 24.

The square root of 742245 is about 861.5364182668. The cubic root of 742245 is about 90.5417936244.

The spelling of 742245 in words is "seven hundred forty-two thousand, two hundred forty-five".