155005042423 has 16 divisors (see below), whose sum is σ = 193693294080. Its totient is φ = 120507991200.

The previous prime is 155005042417. The next prime is 155005042453. The reversal of 155005042423 is 324240500551.

It is a cyclic number.

It is not a de Polignac number, because 155005042423 - 2⁹ = 155005041911 is a prime.

It is a super-3 number, since 3×155005042423³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155005042403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2258968 + ... + 2326573.

It is an arithmetic number, because the mean of its divisors is an integer number (12105830880).

Almost surely, 2^155005042423 is an apocalyptic number.

155005042423 is a deficient number, since it is larger than the sum of its proper divisors (38688251657).

155005042423 is a wasteful number, since it uses less digits than its factorization.

155005042423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585998.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 155005042423 its reverse (324240500551), we get a palindrome (479245542974).

The spelling of 155005042423 in words is "one hundred fifty-five billion, five million, forty-two thousand, four hundred twenty-three".