155402130 has 32 divisors (see below), whose sum is σ = 401655744. Its totient is φ = 38252736.

The previous prime is 155402111. The next prime is 155402131. The reversal of 155402130 is 31204551.

155402130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155402097 and 155402106.

It is not an unprimeable number, because it can be changed into a prime (155402131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198844 + ... + 199623.

It is an arithmetic number, because the mean of its divisors is an integer number (12551742).

Almost surely, 2^155402130 is an apocalyptic number.

155402130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155402130 is an abundant number, since it is smaller than the sum of its proper divisors (246253614).

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

155402130 is a wasteful number, since it uses less digits than its factorization.

155402130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398490.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 155402130 is about 12466.0390661990. The cubic root of 155402130 is about 537.6326753785.

Adding to 155402130 its reverse (31204551), we get a palindrome (186606681).

The spelling of 155402130 in words is "one hundred fifty-five million, four hundred two thousand, one hundred thirty".