655142743 has 4 divisors (see below), whose sum is σ = 689623960. Its totient is φ = 620661528.

The previous prime is 655142689. The next prime is 655142777. The reversal of 655142743 is 347241556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 655142743 - 2¹⁷ = 655011671 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 (655142783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17240580 + ... + 17240617.

It is an arithmetic number, because the mean of its divisors is an integer number (172405990).

Almost surely, 2^655142743 is an apocalyptic number.

655142743 is a deficient number, since it is larger than the sum of its proper divisors (34481217).

655142743 is a wasteful number, since it uses less digits than its factorization.

655142743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34481216.

The product of its digits is 100800, while the sum is 37.

The square root of 655142743 is about 25595.7563474885. The cubic root of 655142743 is about 868.5176426153.

It can be divided in two parts, 6551 and 42743, that added together give a palindrome (49294).

The spelling of 655142743 in words is "six hundred fifty-five million, one hundred forty-two thousand, seven hundred forty-three".