1243132254 has 144 divisors (see below), whose sum is σ = 3398522400. Its totient is φ = 325503360.

The previous prime is 1243132249. The next prime is 1243132277. The reversal of 1243132254 is 4522313421.

1243132254 is a `hidden beast` number, since 1 + 2 + 431 + 3 + 225 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2075047 + ... + 2075645.

It is an arithmetic number, because the mean of its divisors is an integer number (23600850).

Almost surely, 2^1243132254 is an apocalyptic number.

1243132254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243132254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699261200).

1243132254 is an abundant number, since it is smaller than the sum of its proper divisors (2155390146).

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

1243132254 is a wasteful number, since it uses less digits than its factorization.

1243132254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 805 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1243132254 is about 35258.0806908147. The cubic root of 1243132254 is about 1075.2409062399.

Adding to 1243132254 its reverse (4522313421), we get a palindrome (5765445675).

The spelling of 1243132254 in words is "one billion, two hundred forty-three million, one hundred thirty-two thousand, two hundred fifty-four".