742569 has 8 divisors (see below), whose sum is σ = 998400. Its totient is φ = 490896.

The previous prime is 742559. The next prime is 742579. The reversal of 742569 is 965247.

742569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (742559) and next prime (742579).

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

It is not a de Polignac number, because 742569 - 2⁵ = 742537 is a prime.

It is a super-2 number, since 2×742569² = 1102817439522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (742519) 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, 594 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (124800).

742569 is a Friedman number, since it can be written as ((7+6)^5-4)*2-9, using all its digits and the basic arithmetic operations.

2⁷⁴²⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

742569 is a deficient number, since it is larger than the sum of its proper divisors (255831).

742569 is a wasteful number, since it uses less digits than its factorization.

742569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079.

The product of its digits is 15120, while the sum is 33.

The square root of 742569 is about 861.7244339114. The cubic root of 742569 is about 90.5549659478.

The spelling of 742569 in words is "seven hundred forty-two thousand, five hundred sixty-nine".