143420730 has 32 divisors (see below), whose sum is σ = 347264064. Its totient is φ = 37906176.

The previous prime is 143420729. The next prime is 143420737. The reversal of 143420730 is 37024341.

It is a self number, because there is not a number n which added to its sum of digits gives 143420730.

It is not an unprimeable number, because it can be changed into a prime (143420737) 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 15 ways as a sum of consecutive naturals, for example, 17764 + ... + 24543.

It is an arithmetic number, because the mean of its divisors is an integer number (10852002).

Almost surely, 2^143420730 is an apocalyptic number.

143420730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143420730 is an abundant number, since it is smaller than the sum of its proper divisors (203843334).

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

143420730 is a wasteful number, since it uses less digits than its factorization.

143420730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42430.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 143420730 is about 11975.8394277813. The cubic root of 143420730 is about 523.4445024176. Note that the first 3 decimals are identical.

The spelling of 143420730 in words is "one hundred forty-three million, four hundred twenty thousand, seven hundred thirty".