1254452220 has 144 divisors (see below), whose sum is σ = 4371494400. Its totient is φ = 285234048.

The previous prime is 1254452207. The next prime is 1254452233. The reversal of 1254452220 is 222544521.

It is an interprime number because it is at equal distance from previous prime (1254452207) and next prime (1254452233).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248239 + ... + 253241.

It is an arithmetic number, because the mean of its divisors is an integer number (30357600).

Almost surely, 2^1254452220 is an apocalyptic number.

1254452220 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 1254452220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185747200).

1254452220 is an abundant number, since it is smaller than the sum of its proper divisors (3117042180).

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

1254452220 is a wasteful number, since it uses less digits than its factorization.

1254452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224 (or 5219 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1254452220 is about 35418.2469921932. The cubic root of 1254452220 is about 1078.4947652148.

Adding to 1254452220 its reverse (222544521), we get a palindrome (1476996741).

The spelling of 1254452220 in words is "one billion, two hundred fifty-four million, four hundred fifty-two thousand, two hundred twenty".