1242253300 has 18 divisors (see below), whose sum is σ = 2695689878. Its totient is φ = 496901280.

The previous prime is 1242253289. The next prime is 1242253303. The reversal of 1242253300 is 33522421.

It can be written as a sum of positive squares in 3 ways, for example, as 55175184 + 1187078116 = 7428^2 + 34454^2 .

It is a super-2 number, since 2×1242253300² = 3086386522721780000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242253303) 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, 6211167 + ... + 6211366.

Almost surely, 2^1242253300 is an apocalyptic number.

1242253300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242253300 is an abundant number, since it is smaller than the sum of its proper divisors (1453436578).

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

1242253300 is a wasteful number, since it uses less digits than its factorization.

1242253300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12422547 (or 12422540 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1242253300 is about 35245.6139115210. The cubic root of 1242253300 is about 1074.9874308968.

Adding to 1242253300 its reverse (33522421), we get a palindrome (1275775721).

The spelling of 1242253300 in words is "one billion, two hundred forty-two million, two hundred fifty-three thousand, three hundred".