155424140 has 24 divisors (see below), whose sum is σ = 330326640. Its totient is φ = 61419968.

The previous prime is 155424127. The next prime is 155424169. The reversal of 155424140 is 41424551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45155 + ... + 48474.

It is an arithmetic number, because the mean of its divisors is an integer number (13763610).

Almost surely, 2^155424140 is an apocalyptic number.

155424140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155424140 is an abundant number, since it is smaller than the sum of its proper divisors (174902500).

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

155424140 is a wasteful number, since it uses less digits than its factorization.

155424140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93721 (or 93719 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 155424140 is about 12466.9218333958. The cubic root of 155424140 is about 537.6580562759.

Adding to 155424140 its reverse (41424551), we get a palindrome (196848691).

The spelling of 155424140 in words is "one hundred fifty-five million, four hundred twenty-four thousand, one hundred forty".