421451361 has 6 divisors (see below), whose sum is σ = 608763090. Its totient is φ = 280967568.

The previous prime is 421451357. The next prime is 421451431. The reversal of 421451361 is 163154124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 340181136 + 81270225 = 18444^2 + 9015^2 .

It is not a de Polignac number, because 421451361 - 2² = 421451357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421451321) 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, 23413956 + ... + 23413973.

It is an arithmetic number, because the mean of its divisors is an integer number (101460515).

Almost surely, 2^421451361 is an apocalyptic number.

It is an amenable number.

421451361 is a deficient number, since it is larger than the sum of its proper divisors (187311729).

421451361 is a wasteful number, since it uses less digits than its factorization.

421451361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46827935 (or 46827932 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 421451361 is about 20529.2805767762. The cubic root of 421451361 is about 749.7488705881.

The spelling of 421451361 in words is "four hundred twenty-one million, four hundred fifty-one thousand, three hundred sixty-one".