143734640 has 120 divisors (see below), whose sum is σ = 399652992. Its totient is φ = 47900160.

The previous prime is 143734597. The next prime is 143734649. The reversal of 143734640 is 46437341.

It is a junction number, because it is equal to n+sod(n) for n = 143734597 and 143734606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143734649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144545 + ... + 145535.

Almost surely, 2^143734640 is an apocalyptic number.

143734640 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 143734640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199826496).

143734640 is an abundant number, since it is smaller than the sum of its proper divisors (255918352).

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

143734640 is a wasteful number, since it uses less digits than its factorization.

143734640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 143734640 is about 11988.9382348897. The cubic root of 143734640 is about 523.8261179368.

The spelling of 143734640 in words is "one hundred forty-three million, seven hundred thirty-four thousand, six hundred forty".