143421421011 has 64 divisors (see below), whose sum is σ = 219191132160. Its totient is φ = 82569069440.

The previous prime is 143421421001. The next prime is 143421421021. The reversal of 143421421011 is 110124124341.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (143421421001) and next prime (143421421021).

It is not a de Polignac number, because 143421421011 - 2²⁹ = 142884550099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143421421001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77650090 + ... + 77651936.

It is an arithmetic number, because the mean of its divisors is an integer number (3424861440).

Almost surely, 2^143421421011 is an apocalyptic number.

143421421011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143421421011 is a deficient number, since it is larger than the sum of its proper divisors (75769711149).

143421421011 is a wasteful number, since it uses less digits than its factorization.

143421421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 143421421011 its reverse (110124124341), we get a palindrome (253545545352).

The spelling of 143421421011 in words is "one hundred forty-three billion, four hundred twenty-one million, four hundred twenty-one thousand, eleven".