153240 has 32 divisors (see below), whose sum is σ = 460080. Its totient is φ = 40832.

The previous prime is 153191. The next prime is 153247. The reversal of 153240 is 42351.

153240 = T₅₉ + T₆₀ + ... + T₁₀₃.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153247) by changing a digit.

153240 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519 + ... + 758.

2¹⁵³²⁴⁰ is an apocalyptic number.

153240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153240 is an abundant number, since it is smaller than the sum of its proper divisors (306840).

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

153240 is a wasteful number, since it uses less digits than its factorization.

153240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 153240 is about 391.4588100937. The cubic root of 153240 is about 53.5127637174.

Adding to 153240 its reverse (42351), we get a palindrome (195591).

Subtracting from 153240 its reverse (42351), we obtain a square (110889 = 333²).

It can be divided in two parts, 153 and 240, that added together give a palindrome (393).

The spelling of 153240 in words is "one hundred fifty-three thousand, two hundred forty".