1242005464 has 32 divisors (see below), whose sum is σ = 2723339520. Its totient is φ = 519908256.

The previous prime is 1242005459. The next prime is 1242005467. The reversal of 1242005464 is 4645002421.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242005467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255484 + ... + 260299.

It is an arithmetic number, because the mean of its divisors is an integer number (85104360).

Almost surely, 2^1242005464 is an apocalyptic number.

1242005464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242005464 is an abundant number, since it is smaller than the sum of its proper divisors (1481334056).

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

1242005464 is a wasteful number, since it uses less digits than its factorization.

1242005464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515839 (or 515835 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1242005464 is about 35242.0978944217. The cubic root of 1242005464 is about 1074.9159376127.

Adding to 1242005464 its reverse (4645002421), we get a palindrome (5887007885).

The spelling of 1242005464 in words is "one billion, two hundred forty-two million, five thousand, four hundred sixty-four".