1254344520 has 256 divisors, whose sum is σ = 4491002880. Its totient is φ = 276249600.

The previous prime is 1254344501. The next prime is 1254344521. The reversal of 1254344520 is 254434521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1254344521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1149175 + ... + 1150265.

It is an arithmetic number, because the mean of its divisors is an integer number (17542980).

Almost surely, 2^1254344520 is an apocalyptic number.

1254344520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1254344520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245501440).

1254344520 is an abundant number, since it is smaller than the sum of its proper divisors (3236658360).

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

1254344520 is a wasteful number, since it uses less digits than its factorization.

1254344520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 1254344520 is about 35416.7265568121. The cubic root of 1254344520 is about 1078.4638998940.

Subtracting from 1254344520 its reverse (254434521), we obtain a palindrome (999909999).

The spelling of 1254344520 in words is "one billion, two hundred fifty-four million, three hundred forty-four thousand, five hundred twenty".