155423043 has 12 divisors (see below), whose sum is σ = 232815128. Its totient is φ = 103615200.

The previous prime is 155423033. The next prime is 155423053. The reversal of 155423043 is 340324551.

It is an interprime number because it is at equal distance from previous prime (155423033) and next prime (155423053).

It is not a de Polignac number, because 155423043 - 2¹⁶ = 155357507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155422998 and 155423016.

It is not an unprimeable number, because it can be changed into a prime (155423033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319558 + ... + 320043.

Almost surely, 2^155423043 is an apocalyptic number.

155423043 is a deficient number, since it is larger than the sum of its proper divisors (77392085).

155423043 is an frugal number, since it uses more digits than its factorization.

155423043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639616 (or 639604 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 155423043 is about 12466.8778368924. The cubic root of 155423043 is about 537.6567913239.

Adding to 155423043 its reverse (340324551), we get a palindrome (495747594).

The spelling of 155423043 in words is "one hundred fifty-five million, four hundred twenty-three thousand, forty-three".