1242052450 has 12 divisors (see below), whose sum is σ = 2310217650. Its totient is φ = 496820960.

The previous prime is 1242052429. The next prime is 1242052451. The reversal of 1242052450 is 542502421.

It can be written as a sum of positive squares in 3 ways, for example, as 995970481 + 246081969 = 31559^2 + 15687^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1242052451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12420475 + ... + 12420574.

Almost surely, 2^1242052450 is an apocalyptic number.

1242052450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242052450 is a deficient number, since it is larger than the sum of its proper divisors (1068165200).

1242052450 is a wasteful number, since it uses less digits than its factorization.

1242052450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24841061 (or 24841056 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1242052450 is about 35242.7645056400. The cubic root of 1242052450 is about 1074.9294924010.

Adding to 1242052450 its reverse (542502421), we get a palindrome (1784554871).

The spelling of 1242052450 in words is "one billion, two hundred forty-two million, fifty-two thousand, four hundred fifty".