143400121 has 4 divisors (see below), whose sum is σ = 143485072. Its totient is φ = 143315172.

The previous prime is 143400107. The next prime is 143400143. The reversal of 143400121 is 121004341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143400121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143400095 and 143400104.

It is not an unprimeable number, because it can be changed into a prime (143400161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39891 + ... + 43336.

It is an arithmetic number, because the mean of its divisors is an integer number (35871268).

Almost surely, 2^143400121 is an apocalyptic number.

It is an amenable number.

143400121 is a deficient number, since it is larger than the sum of its proper divisors (84951).

143400121 is an equidigital number, since it uses as much as digits as its factorization.

143400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84950.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 143400121 is about 11974.9789561402. The cubic root of 143400121 is about 523.4194289049.

Adding to 143400121 its reverse (121004341), we get a palindrome (264404462).

The spelling of 143400121 in words is "one hundred forty-three million, four hundred thousand, one hundred twenty-one".