42236210421 has 24 divisors (see below), whose sum is σ = 63690627000. Its totient is φ = 26937090432.

The previous prime is 42236210411. The next prime is 42236210441. The reversal of 42236210421 is 12401263224.

42236210421 is a `hidden beast` number, since 4 + 2 + 23 + 6 + 210 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 675272196 + 41560938225 = 25986^2 + 203865^2 .

It is not a de Polignac number, because 42236210421 - 2⁵ = 42236210389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42236210411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 713866 + ... + 770763.

It is an arithmetic number, because the mean of its divisors is an integer number (2653776125).

Almost surely, 2^42236210421 is an apocalyptic number.

It is an amenable number.

42236210421 is a deficient number, since it is larger than the sum of its proper divisors (21454416579).

42236210421 is a wasteful number, since it uses less digits than its factorization.

42236210421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484773 (or 1484770 counting only the distinct ones).

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

Adding to 42236210421 its reverse (12401263224), we get a palindrome (54637473645).

The spelling of 42236210421 in words is "forty-two billion, two hundred thirty-six million, two hundred ten thousand, four hundred twenty-one".