143855540 has 12 divisors (see below), whose sum is σ = 302096676. Its totient is φ = 57542208.

The previous prime is 143855539. The next prime is 143855549. The reversal of 143855540 is 45558341.

It can be written as a sum of positive squares in 2 ways, for example, as 59876644 + 83978896 = 7738^2 + 9164^2 .

It is a super-3 number, since 3×143855540³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143855540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143855549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3596369 + ... + 3596408.

It is an arithmetic number, because the mean of its divisors is an integer number (25174723).

Almost surely, 2^143855540 is an apocalyptic number.

143855540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143855540 is an abundant number, since it is smaller than the sum of its proper divisors (158241136).

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

143855540 is a wasteful number, since it uses less digits than its factorization.

143855540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7192786 (or 7192784 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 143855540 is about 11993.9793229770. The cubic root of 143855540 is about 523.9729459839.

The spelling of 143855540 in words is "one hundred forty-three million, eight hundred fifty-five thousand, five hundred forty".