1242252400 has 30 divisors (see below), whose sum is σ = 2984512352. Its totient is φ = 496900800.

The previous prime is 1242252397. The next prime is 1242252421. The reversal of 1242252400 is 42522421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1552416 + ... + 1553215.

Almost surely, 2^1242252400 is an apocalyptic number.

1242252400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242252400 is an abundant number, since it is smaller than the sum of its proper divisors (1742259952).

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

1242252400 is a wasteful number, since it uses less digits than its factorization.

1242252400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105649 (or 3105638 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1242252400 is about 35245.6011439726. The cubic root of 1242252400 is about 1074.9871712909.

Adding to 1242252400 its reverse (42522421), we get a palindrome (1284774821).

The spelling of 1242252400 in words is "one billion, two hundred forty-two million, two hundred fifty-two thousand, four hundred".