143420140 has 24 divisors (see below), whose sum is σ = 309323952. Its totient is φ = 55817280.

The previous prime is 143420131. The next prime is 143420149. The reversal of 143420140 is 41024341.

It is an interprime number because it is at equal distance from previous prime (143420131) and next prime (143420149).

It is a super-4 number, since 4×143420140⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (143420149) 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, 96166 + ... + 97645.

It is an arithmetic number, because the mean of its divisors is an integer number (12888498).

Almost surely, 2^143420140 is an apocalyptic number.

143420140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143420140 is an abundant number, since it is smaller than the sum of its proper divisors (165903812).

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

143420140 is a wasteful number, since it uses less digits than its factorization.

143420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193857 (or 193855 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 143420140 is about 11975.8147948271. The cubic root of 143420140 is about 523.4437846398.

Adding to 143420140 its reverse (41024341), we get a palindrome (184444481).

The spelling of 143420140 in words is "one hundred forty-three million, four hundred twenty thousand, one hundred forty".