1023232142421 has 6 divisors (see below), whose sum is σ = 1478001983510. Its totient is φ = 682154761608.

The previous prime is 1023232142369. The next prime is 1023232142423. The reversal of 1023232142421 is 1242412323201.

1023232142421 is a `hidden beast` number, since 1 + 0 + 2 + 3 + 23 + 214 + 2 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 597280119921 + 425952022500 = 772839^2 + 652650^2 .

It is not a de Polignac number, because 1023232142421 - 2⁷ = 1023232142293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023232142423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56846230126 + ... + 56846230143.

Almost surely, 2^{1023232142421} is an apocalyptic number.

It is an amenable number.

1023232142421 is a deficient number, since it is larger than the sum of its proper divisors (454769841089).

1023232142421 is a wasteful number, since it uses less digits than its factorization.

1023232142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113692460275 (or 113692460272 counting only the distinct ones).

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

Adding to 1023232142421 its reverse (1242412323201), we get a palindrome (2265644465622).

The spelling of 1023232142421 in words is "one trillion, twenty-three billion, two hundred thirty-two million, one hundred forty-two thousand, four hundred twenty-one".