1453220043 has 12 divisors (see below), whose sum is σ = 2129788584. Its totient is φ = 880739200.

The previous prime is 1453220039. The next prime is 1453220047. The reversal of 1453220043 is 3400223541.

It is an interprime number because it is at equal distance from previous prime (1453220039) and next prime (1453220047).

It is not a de Polignac number, because 1453220043 - 2² = 1453220039 is a prime.

It is a super-2 number, since 2×1453220043² = 4223696986753843698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1453219995 and 1453220022.

It is not an unprimeable number, because it can be changed into a prime (1453220047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001318 + ... + 2002043.

It is an arithmetic number, because the mean of its divisors is an integer number (177482382).

Almost surely, 2^1453220043 is an apocalyptic number.

1453220043 is a deficient number, since it is larger than the sum of its proper divisors (676568541).

1453220043 is a wasteful number, since it uses less digits than its factorization.

1453220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003386 (or 4003375 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1453220043 is about 38121.1233176568. The cubic root of 1453220043 is about 1132.6884177927.

Adding to 1453220043 its reverse (3400223541), we get a palindrome (4853443584).

The spelling of 1453220043 in words is "one billion, four hundred fifty-three million, two hundred twenty thousand, forty-three".