155043240 has 128 divisors (see below), whose sum is σ = 514684800. Its totient is φ = 37048320.

The previous prime is 155043227. The next prime is 155043257. The reversal of 155043240 is 42340551.

155043240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 155043240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95556 + ... + 97164.

It is an arithmetic number, because the mean of its divisors is an integer number (4020975).

Almost surely, 2^155043240 is an apocalyptic number.

155043240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257342400).

155043240 is an abundant number, since it is smaller than the sum of its proper divisors (359641560).

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

155043240 is a wasteful number, since it uses less digits than its factorization.

155043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 155043240 is about 12451.6360370836. The cubic root of 155043240 is about 537.2184817481.

Adding to 155043240 its reverse (42340551), we get a palindrome (197383791).

The spelling of 155043240 in words is "one hundred fifty-five million, forty-three thousand, two hundred forty".