155430342 has 24 divisors (see below), whose sum is σ = 347630400. Its totient is φ = 50138640.

The previous prime is 155430329. The next prime is 155430349. The reversal of 155430342 is 243034551.

155430342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155430349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138717 + ... + 139832.

It is an arithmetic number, because the mean of its divisors is an integer number (14484600).

Almost surely, 2^155430342 is an apocalyptic number.

155430342 is an abundant number, since it is smaller than the sum of its proper divisors (192200058).

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

155430342 is a wasteful number, since it uses less digits than its factorization.

155430342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278588 (or 278585 counting only the distinct ones).

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

The square root of 155430342 is about 12467.1705691388. The cubic root of 155430342 is about 537.6652076981.

Adding to 155430342 its reverse (243034551), we get a palindrome (398464893).

The spelling of 155430342 in words is "one hundred fifty-five million, four hundred thirty thousand, three hundred forty-two".