155142043 has 4 divisors (see below), whose sum is σ = 177305200. Its totient is φ = 132978888.

The previous prime is 155141981. The next prime is 155142047. The reversal of 155142043 is 340241551.

It is a happy number.

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

It is not a de Polignac number, because 155142043 - 2⁹ = 155141531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155141999 and 155142017.

It is not an unprimeable number, because it can be changed into a prime (155142047) 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, 11081568 + ... + 11081581.

It is an arithmetic number, because the mean of its divisors is an integer number (44326300).

Almost surely, 2^155142043 is an apocalyptic number.

155142043 is a deficient number, since it is larger than the sum of its proper divisors (22163157).

155142043 is an equidigital number, since it uses as much as digits as its factorization.

155142043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163156.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 155142043 is about 12455.6028758146. The cubic root of 155142043 is about 537.3325736333.

Adding to 155142043 its reverse (340241551), we get a palindrome (495383594).

The spelling of 155142043 in words is "one hundred fifty-five million, one hundred forty-two thousand, forty-three".