1200453520 has 40 divisors (see below), whose sum is σ = 3189777984. Its totient is φ = 411583872.

The previous prime is 1200453491. The next prime is 1200453533. The reversal of 1200453520 is 253540021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1200453491 and 1200453500.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071274 + ... + 1072393.

Almost surely, 2^1200453520 is an apocalyptic number.

1200453520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200453520 is an abundant number, since it is smaller than the sum of its proper divisors (1989324464).

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

1200453520 is a wasteful number, since it uses less digits than its factorization.

1200453520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143687 (or 2143681 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1200453520 is about 34647.5615303588. The cubic root of 1200453520 is about 1062.7924236864.

Adding to 1200453520 its reverse (253540021), we get a palindrome (1453993541).

The spelling of 1200453520 in words is "one billion, two hundred million, four hundred fifty-three thousand, five hundred twenty".