742870 has 8 divisors (see below), whose sum is σ = 1337184. Its totient is φ = 297144.

The previous prime is 742817. The next prime is 742891. The reversal of 742870 is 78247.

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

It is a congruent number.

It is an unprimeable number.

742870 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37134 + ... + 37153.

It is an arithmetic number, because the mean of its divisors is an integer number (167148).

2⁷⁴²⁸⁷⁰ is an apocalyptic number.

742870 is a deficient number, since it is larger than the sum of its proper divisors (594314).

742870 is a wasteful number, since it uses less digits than its factorization.

742870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74294.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 742870 is about 861.8990660164. The cubic root of 742870 is about 90.5671997662.

The spelling of 742870 in words is "seven hundred forty-two thousand, eight hundred seventy".