155424743 has 4 divisors (see below), whose sum is σ = 155451120. Its totient is φ = 155398368.

The previous prime is 155424739. The next prime is 155424803. The reversal of 155424743 is 347424551.

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 155424743 - 2² = 155424739 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 (155424713) 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, 143 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (38862780).

Almost surely, 2^155424743 is an apocalyptic number.

155424743 is a deficient number, since it is larger than the sum of its proper divisors (26377).

155424743 is an equidigital number, since it uses as much as digits as its factorization.

155424743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26376.

The product of its digits is 67200, while the sum is 35.

The square root of 155424743 is about 12466.9460173693. The cubic root of 155424743 is about 537.6587515935.

The spelling of 155424743 in words is "one hundred fifty-five million, four hundred twenty-four thousand, seven hundred forty-three".