1453033421 has 4 divisors (see below), whose sum is σ = 1660609632. Its totient is φ = 1245457212.

The previous prime is 1453033411. The next prime is 1453033423. The reversal of 1453033421 is 1243303541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1243303541 = 23459 ⋅52999.

It is a cyclic number.

It is not a de Polignac number, because 1453033421 - 2¹⁰ = 1453032397 is a prime.

It is a super-2 number, since 2×1453033421² = 4222612245085926482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453033423) 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, 103788095 + ... + 103788108.

It is an arithmetic number, because the mean of its divisors is an integer number (415152408).

Almost surely, 2^1453033421 is an apocalyptic number.

It is an amenable number.

1453033421 is a deficient number, since it is larger than the sum of its proper divisors (207576211).

1453033421 is an equidigital number, since it uses as much as digits as its factorization.

1453033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207576210.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1453033421 is about 38118.6754885319. The cubic root of 1453033421 is about 1132.6399292360.

Adding to 1453033421 its reverse (1243303541), we get a palindrome (2696336962).

The spelling of 1453033421 in words is "one billion, four hundred fifty-three million, thirty-three thousand, four hundred twenty-one".