1254021252 has 144 divisors (see below), whose sum is σ = 3445981056. Its totient is φ = 353408000.

The previous prime is 1254021247. The next prime is 1254021257. The reversal of 1254021252 is 2521204521.

It is an interprime number because it is at equal distance from previous prime (1254021247) and next prime (1254021257).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254021257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2492833 + ... + 2493335.

It is an arithmetic number, because the mean of its divisors is an integer number (23930424).

Almost surely, 2^1254021252 is an apocalyptic number.

1254021252 is a gapful number since it is divisible by the number (12) 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 1254021252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722990528).

1254021252 is an abundant number, since it is smaller than the sum of its proper divisors (2191959804).

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

1254021252 is a wasteful number, since it uses less digits than its factorization.

1254021252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1254021252 is about 35412.1624869197. The cubic root of 1254021252 is about 1078.3712451737.

Adding to 1254021252 its reverse (2521204521), we get a palindrome (3775225773).

The spelling of 1254021252 in words is "one billion, two hundred fifty-four million, twenty-one thousand, two hundred fifty-two".