1452541421 has 4 divisors (see below), whose sum is σ = 1537985052. Its totient is φ = 1367097792.

The previous prime is 1452541351. The next prime is 1452541457. The reversal of 1452541421 is 1241452541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931104196 + 521437225 = 30514^2 + 22835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1452541421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452541021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42721790 + ... + 42721823.

It is an arithmetic number, because the mean of its divisors is an integer number (384496263).

Almost surely, 2^1452541421 is an apocalyptic number.

It is an amenable number.

1452541421 is a deficient number, since it is larger than the sum of its proper divisors (85443631).

1452541421 is an equidigital number, since it uses as much as digits as its factorization.

1452541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85443630.

The product of its digits is 6400, while the sum is 29.

The square root of 1452541421 is about 38112.2214125600. The cubic root of 1452541421 is about 1132.5120767619.

Adding to 1452541421 its reverse (1241452541), we get a palindrome (2693993962).

The spelling of 1452541421 in words is "one billion, four hundred fifty-two million, five hundred forty-one thousand, four hundred twenty-one".