1242534064 has 20 divisors (see below), whose sum is σ = 2485069120. Its totient is φ = 601225920.

The previous prime is 1242534061. The next prime is 1242534107. The reversal of 1242534064 is 4604352421.

1242534064 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1242534061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252059 + ... + 1253050.

It is an arithmetic number, because the mean of its divisors is an integer number (124253456).

Almost surely, 2^1242534064 is an apocalyptic number.

It is an amenable number.

1242534064 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1242534064 is a wasteful number, since it uses less digits than its factorization.

1242534064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505148 (or 2505142 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1242534064 is about 35249.5966501746. The cubic root of 1242534064 is about 1075.0684114386.

Adding to 1242534064 its reverse (4604352421), we get a palindrome (5846886485).

The spelling of 1242534064 in words is "one billion, two hundred forty-two million, five hundred thirty-four thousand, sixty-four".