1451243250 has 128 divisors (see below), whose sum is σ = 4261870080. Its totient is φ = 364204800.

The previous prime is 1451243243. The next prime is 1451243273. The reversal of 1451243250 is 523421541.

It is a super-2 number, since 2×1451243250² = 4212213941341125000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108427 + ... + 121073.

It is an arithmetic number, because the mean of its divisors is an integer number (33295860).

Almost surely, 2^1451243250 is an apocalyptic number.

1451243250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1451243250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2130935040).

1451243250 is an abundant number, since it is smaller than the sum of its proper divisors (2810626830).

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

1451243250 is a wasteful number, since it uses less digits than its factorization.

1451243250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12690 (or 12674 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1451243250 is about 38095.1867038344. The cubic root of 1451243250 is about 1132.1745918282.

Adding to 1451243250 its reverse (523421541), we get a palindrome (1974664791).

The spelling of 1451243250 in words is "one billion, four hundred fifty-one million, two hundred forty-three thousand, two hundred fifty".