1021420432143 has 6 divisors (see below), whose sum is σ = 1475385068664. Its totient is φ = 680946954756.

The previous prime is 1021420432133. The next prime is 1021420432157. The reversal of 1021420432143 is 3412340241201.

1021420432143 is a `hidden beast` number, since 1 + 0 + 21 + 420 + 4 + 3 + 214 + 3 = 666.

It is not a de Polignac number, because 1021420432143 - 2¹⁴ = 1021420415759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021420432103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56745579555 + ... + 56745579572.

It is an arithmetic number, because the mean of its divisors is an integer number (245897511444).

Almost surely, 2^{1021420432143} is an apocalyptic number.

1021420432143 is a deficient number, since it is larger than the sum of its proper divisors (453964636521).

1021420432143 is a wasteful number, since it uses less digits than its factorization.

1021420432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113491159133 (or 113491159130 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1021420432143 its reverse (3412340241201), we get a palindrome (4433760673344).

The spelling of 1021420432143 in words is "one trillion, twenty-one billion, four hundred twenty million, four hundred thirty-two thousand, one hundred forty-three".