143420155 has 16 divisors (see below), whose sum is σ = 175034880. Its totient is φ = 112795488.

The previous prime is 143420153. The next prime is 143420159. The reversal of 143420155 is 551024341.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 143420155 - 2¹ = 143420153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143420153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111144 + ... + 112426.

It is an arithmetic number, because the mean of its divisors is an integer number (10939680).

Almost surely, 2^143420155 is an apocalyptic number.

143420155 is a deficient number, since it is larger than the sum of its proper divisors (31614725).

143420155 is a wasteful number, since it uses less digits than its factorization.

143420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 143420155 is about 11975.8154210893. The cubic root of 143420155 is about 523.4438028884.

Adding to 143420155 its reverse (551024341), we get a palindrome (694444496).

The spelling of 143420155 in words is "one hundred forty-three million, four hundred twenty thousand, one hundred fifty-five".