421452953 has 2 divisors, whose sum is σ = 421452954. Its totient is φ = 421452952.

The previous prime is 421452893. The next prime is 421453033. The reversal of 421452953 is 359254124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288558169 + 132894784 = 16987^2 + 11528^2 .

It is a cyclic number.

It is not a de Polignac number, because 421452953 - 2¹⁴ = 421436569 is a prime.

It is equal to p_22417685 and since 421452953 and 22417685 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (421452553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210726476 + 210726477.

It is an arithmetic number, because the mean of its divisors is an integer number (210726477).

Almost surely, 2^421452953 is an apocalyptic number.

It is an amenable number.

421452953 is a deficient number, since it is larger than the sum of its proper divisors (1).

421452953 is an equidigital number, since it uses as much as digits as its factorization.

421452953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 421452953 is about 20529.3193506263. The cubic root of 421452953 is about 749.7498146264.

The spelling of 421452953 in words is "four hundred twenty-one million, four hundred fifty-two thousand, nine hundred fifty-three".