230402020421 has 8 divisors (see below), whose sum is σ = 237610974744. Its totient is φ = 223244743680.

The previous prime is 230402020397. The next prime is 230402020447. The reversal of 230402020421 is 124020204032.

It can be written as a sum of positive squares in 4 ways, for example, as 45790008196 + 184612012225 = 213986^2 + 429665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230402020421 - 2²⁶ = 230334911557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230402020393 and 230402020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230402020481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12910340 + ... + 12928173.

It is an arithmetic number, because the mean of its divisors is an integer number (29701371843).

Almost surely, 2^230402020421 is an apocalyptic number.

It is an amenable number.

230402020421 is a deficient number, since it is larger than the sum of its proper divisors (7208954323).

230402020421 is a wasteful number, since it uses less digits than its factorization.

230402020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25838791.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 230402020421 its reverse (124020204032), we get a palindrome (354422224453).

The spelling of 230402020421 in words is "two hundred thirty billion, four hundred two million, twenty thousand, four hundred twenty-one".