1242134200 has 24 divisors (see below), whose sum is σ = 2887962480. Its totient is φ = 496853600.

The previous prime is 1242134167. The next prime is 1242134209. The reversal of 1242134200 is 24312421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242134209) 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, 3105136 + ... + 3105535.

It is an arithmetic number, because the mean of its divisors is an integer number (120331770).

Almost surely, 2^1242134200 is an apocalyptic number.

1242134200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242134200 is an abundant number, since it is smaller than the sum of its proper divisors (1645828280).

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

1242134200 is a wasteful number, since it uses less digits than its factorization.

1242134200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210687 (or 6210678 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1242134200 is about 35243.9242990902. The cubic root of 1242134200 is about 1074.9530752908.

Adding to 1242134200 its reverse (24312421), we get a palindrome (1266446621).

The spelling of 1242134200 in words is "one billion, two hundred forty-two million, one hundred thirty-four thousand, two hundred".