1453123540 has 24 divisors (see below), whose sum is σ = 3328974432. Its totient is φ = 528408480.

The previous prime is 1453123531. The next prime is 1453123541. The reversal of 1453123540 is 453213541.

It is a super-2 number, since 2×1453123540² = 4223136045004263200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1453123499 and 1453123508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453123541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3302334 + ... + 3302773.

It is an arithmetic number, because the mean of its divisors is an integer number (138707268).

Almost surely, 2^1453123540 is an apocalyptic number.

1453123540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453123540 is an abundant number, since it is smaller than the sum of its proper divisors (1875850892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1453123540 is a wasteful number, since it uses less digits than its factorization.

1453123540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605127 (or 6605125 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1453123540 is about 38119.8575548231. The cubic root of 1453123540 is about 1132.6633446799.

Subtracting from 1453123540 its reverse (453213541), we obtain a palindrome (999909999).

The spelling of 1453123540 in words is "one billion, four hundred fifty-three million, one hundred twenty-three thousand, five hundred forty".