1021452401 has 4 divisors (see below), whose sum is σ = 1045207152. Its totient is φ = 997697652.

The previous prime is 1021452371. The next prime is 1021452437. The reversal of 1021452401 is 1042541201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1021452401 - 2¹⁰ = 1021451377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021451401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11877311 + ... + 11877396.

It is an arithmetic number, because the mean of its divisors is an integer number (261301788).

Almost surely, 2^1021452401 is an apocalyptic number.

It is an amenable number.

1021452401 is a deficient number, since it is larger than the sum of its proper divisors (23754751).

1021452401 is an equidigital number, since it uses as much as digits as its factorization.

1021452401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23754750.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1021452401 is about 31960.1689763994. The cubic root of 1021452401 is about 1007.1002672216.

Adding to 1021452401 its reverse (1042541201), we get a palindrome (2063993602).

The spelling of 1021452401 in words is "one billion, twenty-one million, four hundred fifty-two thousand, four hundred one".