143240920 has 32 divisors (see below), whose sum is σ = 322639200. Its totient is φ = 57234688.

The previous prime is 143240917. The next prime is 143240939. The reversal of 143240920 is 29042341.

It is a super-2 number, since 2×143240920² = 41035922324892800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 61212 + ... + 63508.

It is an arithmetic number, because the mean of its divisors is an integer number (10082475).

Almost surely, 2^143240920 is an apocalyptic number.

143240920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143240920 is an abundant number, since it is smaller than the sum of its proper divisors (179398280).

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

143240920 is a wasteful number, since it uses less digits than its factorization.

143240920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 143240920 is about 11968.3298751330. The cubic root of 143240920 is about 523.2256593045.

The spelling of 143240920 in words is "one hundred forty-three million, two hundred forty thousand, nine hundred twenty".