1243152250 has 16 divisors (see below), whose sum is σ = 2327181480. Its totient is φ = 497260800.

The previous prime is 1243152241. The next prime is 1243152269. The reversal of 1243152250 is 522513421.

It can be written as a sum of positive squares in 4 ways, for example, as 561263481 + 681888769 = 23691^2 + 26113^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 2486055 + ... + 2486554.

Almost surely, 2^1243152250 is an apocalyptic number.

1243152250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243152250 is a deficient number, since it is larger than the sum of its proper divisors (1084029230).

1243152250 is an equidigital number, since it uses as much as digits as its factorization.

1243152250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972626 (or 4972616 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1243152250 is about 35258.3642558755. The cubic root of 1243152250 is about 1075.2466713551.

Adding to 1243152250 its reverse (522513421), we get a palindrome (1765665671).

The spelling of 1243152250 in words is "one billion, two hundred forty-three million, one hundred fifty-two thousand, two hundred fifty".