155030542 has 4 divisors (see below), whose sum is σ = 232545816. Its totient is φ = 77515270.

The previous prime is 155030539. The next prime is 155030543. The reversal of 155030542 is 245030551.

155030542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155030543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38757634 + ... + 38757637.

It is an arithmetic number, because the mean of its divisors is an integer number (58136454).

Almost surely, 2^155030542 is an apocalyptic number.

155030542 is a deficient number, since it is larger than the sum of its proper divisors (77515274).

155030542 is an equidigital number, since it uses as much as digits as its factorization.

155030542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77515273.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 155030542 is about 12451.1261338081. The cubic root of 155030542 is about 537.2038153309.

Subtracting 155030542 from its reverse (245030551), we obtain a palindrome (90000009).

The spelling of 155030542 in words is "one hundred fifty-five million, thirty thousand, five hundred forty-two".