155423412 has 36 divisors (see below), whose sum is σ = 406426020. Its totient is φ = 50020992.

The previous prime is 155423381. The next prime is 155423417. The reversal of 155423412 is 214324551.

It can be written as a sum of positive squares in 2 ways, for example, as 44036496 + 111386916 = 6636^2 + 10554^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155423417) 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, 73393 + ... + 75480.

Almost surely, 2^155423412 is an apocalyptic number.

155423412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155423412 is an abundant number, since it is smaller than the sum of its proper divisors (251002608).

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

155423412 is a wasteful number, since it uses less digits than its factorization.

155423412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148912 (or 148907 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 155423412 is about 12466.8926360982. The cubic root of 155423412 is about 537.6572168189.

Adding to 155423412 its reverse (214324551), we get a palindrome (369747963).

The spelling of 155423412 in words is "one hundred fifty-five million, four hundred twenty-three thousand, four hundred twelve".