232140421 has 2 divisors, whose sum is σ = 232140422. Its totient is φ = 232140420.

The previous prime is 232140413. The next prime is 232140427. The reversal of 232140421 is 124041232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222904900 + 9235521 = 14930^2 + 3039^2 .

It is a cyclic number.

It is not a de Polignac number, because 232140421 - 2³ = 232140413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232140427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116070210 + 116070211.

It is an arithmetic number, because the mean of its divisors is an integer number (116070211).

Almost surely, 2^232140421 is an apocalyptic number.

It is an amenable number.

232140421 is a deficient number, since it is larger than the sum of its proper divisors (1).

232140421 is an equidigital number, since it uses as much as digits as its factorization.

232140421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 232140421 is about 15236.1550595943. The cubic root of 232140421 is about 614.5873107664.

Adding to 232140421 its reverse (124041232), we get a palindrome (356181653).

The spelling of 232140421 in words is "two hundred thirty-two million, one hundred forty thousand, four hundred twenty-one".