1001453421 has 4 divisors (see below), whose sum is σ = 1335271232. Its totient is φ = 667635612.

The previous prime is 1001453399. The next prime is 1001453429. The reversal of 1001453421 is 1243541001.

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 not a de Polignac number, because 1001453421 - 2⁵ = 1001453389 is a prime.

It is a super-5 number, since 5×1001453421⁵ (a number of 46 digits) contains 55555 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 (1001453429) 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, 166908901 + ... + 166908906.

It is an arithmetic number, because the mean of its divisors is an integer number (333817808).

Almost surely, 2^1001453421 is an apocalyptic number.

It is an amenable number.

1001453421 is a deficient number, since it is larger than the sum of its proper divisors (333817811).

1001453421 is an equidigital number, since it uses as much as digits as its factorization.

1001453421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333817810.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1001453421 is about 31645.7488614190. The cubic root of 1001453421 is about 1000.4842391413.

Adding to 1001453421 its reverse (1243541001), we get a palindrome (2244994422).

The spelling of 1001453421 in words is "one billion, one million, four hundred fifty-three thousand, four hundred twenty-one".