1242432250 has 64 divisors (see below), whose sum is σ = 2529525024. Its totient is φ = 455040000.

The previous prime is 1242432223. The next prime is 1242432281. The reversal of 1242432250 is 522342421.

It can be written as a sum of positive squares in 16 ways, for example, as 81054009 + 1161378241 = 9003^2 + 34079^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153300 + ... + 161200.

Almost surely, 2^1242432250 is an apocalyptic number.

1242432250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242432250 is an abundant number, since it is smaller than the sum of its proper divisors (1287092774).

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

1242432250 is a wasteful number, since it uses less digits than its factorization.

1242432250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7972 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1242432250 is about 35248.1524338511. The cubic root of 1242432250 is about 1075.0390467158.

Adding to 1242432250 its reverse (522342421), we get a palindrome (1764774671).

The spelling of 1242432250 in words is "one billion, two hundred forty-two million, four hundred thirty-two thousand, two hundred fifty".