155041240 has 16 divisors (see below), whose sum is σ = 348842880. Its totient is φ = 62016480.

The previous prime is 155041223. The next prime is 155041247. The reversal of 155041240 is 42140551.

It is a super-2 number, since 2×155041240² = 48075572201475200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155041247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937976 + ... + 1938055.

It is an arithmetic number, because the mean of its divisors is an integer number (21802680).

Almost surely, 2^155041240 is an apocalyptic number.

155041240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155041240 is an abundant number, since it is smaller than the sum of its proper divisors (193801640).

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

155041240 is a wasteful number, since it uses less digits than its factorization.

155041240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876042 (or 3876038 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 155041240 is about 12451.5557260930. Note that the first 3 decimals coincide. The cubic root of 155041240 is about 537.2161717655.

Adding to 155041240 its reverse (42140551), we get a palindrome (197181791).

The spelling of 155041240 in words is "one hundred fifty-five million, forty-one thousand, two hundred forty".