155235042 has 40 divisors (see below), whose sum is σ = 359073792. Its totient is φ = 50074200.

The previous prime is 155235037. The next prime is 155235049. The reversal of 155235042 is 240532551.

It is a happy number.

155235042 is a `hidden beast` number, since 155 + 2 + 3 + 504 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 155234997 and 155235015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155235049) 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 19 ways as a sum of consecutive naturals, for example, 10434 + ... + 20477.

Almost surely, 2^155235042 is an apocalyptic number.

155235042 is an abundant number, since it is smaller than the sum of its proper divisors (203838750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155235042 is a wasteful number, since it uses less digits than its factorization.

155235042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30956 (or 30947 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155235042 is about 12459.3355360549. The cubic root of 155235042 is about 537.4399191544.

Adding to 155235042 its reverse (240532551), we get a palindrome (395767593).

The spelling of 155235042 in words is "one hundred fifty-five million, two hundred thirty-five thousand, forty-two".