143469940 has 24 divisors (see below), whose sum is σ = 306973800. Its totient is φ = 56304768.

The previous prime is 143469923. The next prime is 143469943. The reversal of 143469940 is 49964341.

It can be written as a sum of positive squares in 4 ways, for example, as 12687844 + 130782096 = 3562^2 + 11436^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 143469893 and 143469902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143469943) 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 7 ways as a sum of consecutive naturals, for example, 66615 + ... + 68734.

It is an arithmetic number, because the mean of its divisors is an integer number (12790575).

Almost surely, 2^143469940 is an apocalyptic number.

143469940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143469940 is an abundant number, since it is smaller than the sum of its proper divisors (163503860).

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

143469940 is a wasteful number, since it uses less digits than its factorization.

143469940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135411 (or 135409 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 143469940 is about 11977.8938048390. The cubic root of 143469940 is about 523.5043630307.

The spelling of 143469940 in words is "one hundred forty-three million, four hundred sixty-nine thousand, nine hundred forty".