705421135 has 4 divisors (see below), whose sum is σ = 846505368. Its totient is φ = 564336904.

The previous prime is 705421133. The next prime is 705421153. The reversal of 705421135 is 531124507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531124507 = 22109 ⋅24023.

It is a cyclic number.

It is not a de Polignac number, because 705421135 - 2¹ = 705421133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705421133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70542109 + ... + 70542118.

It is an arithmetic number, because the mean of its divisors is an integer number (211626342).

Almost surely, 2^705421135 is an apocalyptic number.

705421135 is a deficient number, since it is larger than the sum of its proper divisors (141084233).

705421135 is a wasteful number, since it uses less digits than its factorization.

705421135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141084232.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 705421135 is about 26559.7653415839. The cubic root of 705421135 is about 890.1902278226.

The spelling of 705421135 in words is "seven hundred five million, four hundred twenty-one thousand, one hundred thirty-five".