1242123250 has 32 divisors (see below), whose sum is σ = 2348324784. Its totient is φ = 491920000.

The previous prime is 1242123217. The next prime is 1242123277. The reversal of 1242123250 is 523212421.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 297114169 + 945009081 = 17237^2 + 30741^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654 + ... + 49846.

Almost surely, 2^1242123250 is an apocalyptic number.

1242123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242123250 is a deficient number, since it is larger than the sum of its proper divisors (1106201534).

1242123250 is a wasteful number, since it uses less digits than its factorization.

1242123250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49311 (or 49301 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1242123250 is about 35243.7689528234. The cubic root of 1242123250 is about 1074.9499165418.

Adding to 1242123250 its reverse (523212421), we get a palindrome (1765335671).

The spelling of 1242123250 in words is "one billion, two hundred forty-two million, one hundred twenty-three thousand, two hundred fifty".